[Bug 655024] Re: Using higher cpu usage
** Changed in: murrine Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage To manage notifications about this bug go to: https://bugs.launchpad.net/gtk/+bug/655024/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: gtk Status: New = Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage To manage notifications about this bug go to: https://bugs.launchpad.net/gtk/+bug/655024/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: pango Status: New = Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage To manage notifications about this bug go to: https://bugs.launchpad.net/gtk/+bug/655024/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Sorry about the spam, somebody hacked my gmail account week ago. Does anybody know how to delete posts? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
With the latest murrine from git, I've added a workaround for that... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
This bug was fixed in the package transmission - 2.13-0ubuntu5 --- transmission (2.13-0ubuntu5) natty; urgency=low * debian/patches/0105-murrine_high_cpu_workaround.patch: (LP: #655024) - Workaround the issue found in Murrine that causes high CPU usage in Transmission. * debian/patches/0106-avoid_descriptor_leak.patch (LP: #661947) - Avoid descriptor leakage that caused Too many open files error. * debian/patches/0107-handle_unsorted_blocklist_rules.patch - Handle overlapping/unsorted blocklist rules. * debian/patches/0104-add-scheme-handler.patch - update patch to remove attribute passed to transmission-gtk in Exec -- Krzysztof Klimonda kklimo...@ubuntu.com Wed, 16 Mar 2011 05:48:44 +0100 ** Changed in: transmission (Ubuntu) Status: Fix Committed = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: libcairo Status: Unknown = Invalid ** Changed in: libcairo Importance: Unknown = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: transmission (Ubuntu) Status: Confirmed = Fix Released ** Changed in: libcairo Importance: Medium = Unknown ** Changed in: libcairo Status: Confirmed = Unknown ** Changed in: libcairo Remote watch: freedesktop.org Bugzilla #28067 = freedesktop.org Bugzilla #31589 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
please, don't change the bug status without a reason. The fix has not yet been released in Ubuntu - I've pushed patch to the lp:ubuntu/transmission branch, but has not yet pushed the package, as I have few more patches to prepare first. ** Changed in: transmission (Ubuntu) Status: Fix Released = Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Also affects: transmission via http://trac.transmissionbt.com/ticket/3887 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Branch linked: lp:ubuntu/transmission -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: transmission Status: Unknown = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: transmission (Ubuntu) Importance: Undecided = Medium ** Changed in: transmission (Ubuntu) Status: Incomplete = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: libcairo Importance: Unknown = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
#! Solid, jordan. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Thanks veldt :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: libcairo Status: Unknown = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
top, with updates every 3 seconds. Mouse in another window. 64 torrents, 7.8 fit onscreen at once, non-Compact View, CPU locked to fullspeed (Athlon 64 2 GHz), new = r11752, old = new with torrent- cell-renderer patch (11747) reversed. CPU usage, 300 second test: new and old, all onscreen torrents unpaused: 1.0 - 3.3 new, all onscreen torrents paused: 0.7 - 3.3 old, all onscreen torrents paused: 28.2 - 53.4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
notes for upstream commit r11740: reduce unnecessary re-rendering in the main window The main window called gtk_tree_model_filter_refilter() once per second to refresh the torrent list's filtering. This is not an efficient approach: gtk_tree_model_filter_refilter() emits a row changed event for every row, causing unnecessary re-rendering. I've removed the call to gtk_tree_model_filter_refilter() and expanded the model to include all the fields necessary for filtering. That way we only fire row changed events for rows that actually change. By reducing the number of renders in steady state, this might ameliorate https://bugs.launchpad.net/ubuntu/+source/transmission/+bug/655024 However it will *not* help the related CPU spikes to 100% on scrolling ticket at https://trac.transmissionbt.com/ticket/3887 because rendering paused torrents is still exceptionally expensive in the murrine theme. ** Bug watch added: Transmission Trac #3887 http://trac.transmissionbt.com/ticket/3887 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Granted, it's only 3 torrents and their cells per second, out of 35. But it should be 0. If they're paused and non-dynamic. The list is sorted, which causes rerendering when the list resorts even if the torrent is unchanged. If there is no alternative, I will talk to canonical about linking an earlier cairo to transmission-gtk. I'm not sure this will solve anything. Veldt, Rolcol, and Virgil have all reported the problem goes away when changing to a non-murrine theme, which afaik does not involve a different version of cairo. I'm working on ways to reduce the number of refreshes triggered by the application code, but since (1) this doesn't happen in any other theme, and (2) the CPU still spikes to 100% on scrolling no matter how many periodic refreshes the application code triggers, the root of the problem still appears to be in the murrine theme. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Attached is a patch that we can use in Transmission if text shadows don't get resolved in Murrine and/or Cairo in time for 11.04. The patch avoids use of GtkCellRendererText's sensitive property, and instead renders paused torrents' text using the widget's style's color for insensitive text. This approach honors the theme's insensitive color setting and uses it to draw insensitive text with no etching or shadowing. Veldt, would you be able to compare CPU loads with and without this patch using the default Ubuntu theme(s)? This patch is intended as a Plan B for 11.04 -- the better option is still to solve the theme's text shadow issue. ** Patch added: torrent-render.diff https://bugs.launchpad.net/ubuntu/+source/transmission/+bug/655024/+attachment/1802679/+files/torrent-render.diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Hey guys,Count me in, I'm having the same problem here... went from 10.04 to 10.10 and experiencing the same problems of Transmission UI running like molases(extremely slow). I am also having the system freezing when Transmission is running after a day or two on a bittorrent dedicated computer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage 20)
Hi Andrea! This is about rendering cairo shadowed text to a temporary image surface that we talked about a few months ago. cairo's M Joonas Pihlaja still wants a screenshot of the test you did in this post: https://bugs.launchpad.net/libcairo/+bug/655024/comments/45 I'm hardly a GUI expert, so my e-mail to you in November may be meaningless: --- begin excerpt --- You can hold off on that screenshot if you want. But I'd rather you didn't. I've determined that gtk+ or compiz or the darn app is calling for redisplay at least once every 0.3 seconds. Totally unnecessary, I'd say, but who am I to judge? Granted, it's only 3 torrents and their cells per second, out of 35. But it should be 0. If they're paused and non-dynamic. If there is no alternative, I will talk to canonical about linking an earlier cairo to transmission-gtk. Your theme should be fine. As it already is --- end --- I retrofitted libcairo 1.8 onto my system and that did not fix the problem -- CPU usage went up more than 400% displaying paused torrents in transmission-gtk. As you may recall, these are rendered with the gtk property sensitive = FALSE, which murrine draws shadowed. So going to an earlier libcairo didn't help. This dramatic slowdown only seems to have started with October's ubuntu Maverick, despite the fact that I believe your theme has been the default since April's Lucid. In https://bugs.launchpad.net/libcairo/+bug/655024/comments/55 one of the gui developers of transmission-gtk expressed interest in getting his app working nicely in the next ubuntu release. I posted a silly mini-patch in comment 57 which turns off the slow non-sensitive rendering, but since I am not a GUI developer, I just put in an xpad offset for paused elements instead of non-sensitive, and this makes them shimmer when you mouse over them. It's not a fix, but it eliminates the slowdown as a proof of concept. Is there a way you can make an exception in your theme for transmission-gtk to render non-sensitive elements bold and lighter? That would look similar to the shadowed rendering I see now, and I hope it would be faster. As I said, there is always a chance the transmission-gtk guy will look at some other way than non-sensitive to render paused elements, but please let me know how you feel about all this. Thanks for your work! - veldt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
This is hardly a patch -- it is against the latest transmission nightly, and only swaps out rendering sensitive. With it, pausing torrents reduces (!) CPU, by more than 50 percent. ** Attachment added: patch__torrent-cell-renderer.c https://bugs.launchpad.net/libcairo/+bug/655024/+attachment/1797701/+files/patch__torrent-cell-renderer.c -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I can confirm this. Transmission QT uses less than 1% of my cpu while running and is very very smooth. The GTK version uses over 13 and generally is very slow to scroll, switching to the theme Clearlooks has resolved this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I've been getting reports about this issue in the Transmission forums, as well. It would be nice if it could get fixed in time for 11.04. Also if there's anything I can do downstream in Transmission to ameliorate this, please let me know. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I can confirm that changing theme helps. Changed from Radiance to Clearlooks: no lags when scrolling and much lower cpu usage. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/655024 Title: Using higher cpu usage -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Yesterday I got high cpu usage with deluge-gtk as well. It was like 50% cpu usage with only one torrent downloading from a few peers. I switched to transmissioncli and it was like 1% cpu usage. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I installed kubuntu-desktop to try the kwin window-manager. transmission-gtk ran fine, no slowdown. I went to kde's System Settings -- Application Appearance -- Style, and changed Widget style to GTK+ Style. (Under the Fine Tuning tab, I also changed Graphical effects to High display resolution and Very High CPU. Then (still under Application Appearance) in GTK+ Appearance I chose Ambiance under Widget style. The slowdown with paused torrents returned. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: libcairo Remote watch: freedesktop.org Bugzilla #31589 = freedesktop.org Bugzilla #28067 -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I switched window managers from compiz to metacity (both are included in ubuntu and switching appearance preferences to None changes the window manager, observing the process list) and it's still slow. metacity is a GTK+ window manager, and now I'll be testing the kde one. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Just wanted to say I was having the same issue. I installed transmission-qt and while using it my cpu doesn't get so much load and transmission interface doesn't lag. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
warning, may contain wishes :) I've done more tests with transmission-gtk and all torrents paused. The content of the transmission-gtk window is visually static, with no pixels changing. No other window partially obscures it and the mouse pointer is not moving; there should be no cause to redraw anything. torrent_cell_renderer_render() does a render_compact/_full() 3.31 times/sec. Not much, but these are inactive, unchanging things and do not need continual rerendering. Since the rerendering is slow, it becomes not merely unnecessary, but crippling. This would be a gtk+ or compiz window-manager issue, I think, although it may also be perfectionism; on fast modern hardware with complex gui's, can one really blame a window manager or gui-toolkit for updating something only every 1/3 of a second? Sigh. Having said that, if I swish the mouse pointer around on top of the paused torrents (not clicking), render_compact/_full() is called twice as often -- 6.79 times/sec, and my cpu usage doubles. I can understand the window manager saying, Look out, there is user activity, but with modern GUI's, why bother redrawing the stuff under the mouse if there is no glowing of items the mouse comes near, nor hover reactions of any kind? I guess that's two wishes: don't redraw *even a little bit* if it's not necessary, and, don't repaint under the mouse if you're not reacting to it. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I did tests in transmission's gtk/torrent-cell-renderer.c on the function torrent_cell_renderer_render(), and found that it ran 3.21 times a second with 35 paused torrents and 3.43 times per second with all unpaused. My speculation of excessive redraws is withdrawn, in the case of the transmission-gtk app. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
My current theory is that the cairo routines murrine uses to draw
shadowed text have become slower when using recent versions of cairo,
such as version 1.10.0 in ubuntu 10.10 maverick. Probably not noticeable
normally, except that with transmission-gtk running on compiz, this text
rendering may be happening much more often than necessary, causing a
dramatic slowdown in that app.
If this is correct, there are two solutions, or three, if you count
cairo speeding up:
1) Reduce unnecessary re-rendering in transmission-gtk -- an issue for
the app, gtk+, and/or the window manager compiz. This would likely speed
up execution the most.
2) Speed up murrine's rendering of shadowed text.
3) See cairo bug.
Details for all three are linked here. I would like it if for point 1,
someone could confirm or tell me how to check whether paused torrent
cells in transmission-gtk are being rendered repeatedly.
Details/hints.
1) From track of this bug in cairo bugzilla (now redirected to an earlier bug):
https://bugs.freedesktop.org/show_bug.cgi?id=31589#c5
As to already-rendered items continuing to consume CPU (after a surface flush),
the only reason why that would happen is if the application itself is actually
rerendering the items, say due to a new expose event from the window manager.
There are currently no secret elves in cairo to burn your CPU just because they
can when you're not looking. :)
2) Advice from M Joonas Pihlaja, ending with links to complete code and a nice
set of rendered shadows:
I looked at the cairo-trace you provided in some detail, and it seems that the
slow bit is indeed using stroking to shadow text. A faster and more accurate
method to create shadowed text is to render the content-to-shadow to a
temporary surface first and then paint that to the target surface twice at
slightly different offsets, something like this:
/* Render to a temporary surface (similar to your target surface). */
cairo_push_group(cr);
{
/* render your text here with pango for example. */
}
text_pattern = cairo_pop_group(cr);
/* Drop the shadow. */
cairo_save(cr);
{
double shadow_alpha = 0.5;
double shadow_offset = 2; /* note: keep this an integer */
cairo_translate(cr, shadow_offset, shadow_offset);
cairo_set_source_rgba(0,0,0,shadow_alpha);
cairo_mask(cr, text_pattern);
}
cairo_restore(cr);
/* Paint the text on top of the shadow. */
cairo_set_source(cr, text_pattern);
cairo_paint(cr);
cairo_pattern_destroy(text_pattern);
The technique is illustrated with code that's actually been run here:
http://people.freedesktop.org/~joonas/shadow.c
http://people.freedesktop.org/~joonas/out-shadow.png
3) This cairo bug is entitled Performance regression in synthetic
micro-benchmark [due to global stroke tessellation] :
https://bugs.freedesktop.org/show_bug.cgi?id=28067
** Bug watch added: freedesktop.org Bugzilla #28067
http://bugs.freedesktop.org/show_bug.cgi?id=28067
--
Using higher cpu usage
https://bugs.launchpad.net/bugs/655024
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
tried that code in murrine, low quality shadows compared to the one we have now :( cairo_pattern_t * text_pattern; /* Render to a temporary surface (similar to your target surface). */ cairo_push_group(cr); cairo_translate (cr, x, y); murrine_set_color_rgb (cr, use_text ? colors-text[state_type] : colors-fg[state_type]); pango_cairo_show_layout (cr, layout); text_pattern = cairo_pop_group(cr); /* Drop the shadow. */ cairo_save(cr); cairo_translate (cr, xos, yos); murrine_set_color_rgba (cr, temp, 0.5); cairo_mask(cr, text_pattern); cairo_restore(cr); /* Paint the text on top of the shadow. */ cairo_set_source(cr, text_pattern); cairo_paint(cr); cairo_pattern_destroy(text_pattern); cairo_destroy (cr); -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Hi Andrea! The latest major release of cairo is version 1.10.0; it is a recent release, 71 days old; have you grabbed it yet? It would improve the quality of your rendering test above. If you are using cairo 1.10.0 in the above test, any poor quality might be a cairo bug -- screenshots of your test above would be very helpful. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage
Yes, will take a screenshot tomorrow -- Andrea Cimitan - http://www.cimitan.com Software Engineer | Desktop Experience Team Product Strategy | Canonical Ltd -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
IIRC, when I tried using an image surface, the quality was poor... that's why I was using this. whatever is cairo_stroke or the layout path, the problem seems to be in the second one, cause if I user show_layout instead layout_path + stroke is fast again. (but it exposes the bug of rendering text inside span tag) -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: gtk Status: Unknown = New ** Changed in: gtk Importance: Unknown = Medium -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Bug watch added: GNOME Bug Tracker #634805 https://bugzilla.gnome.org/show_bug.cgi?id=634805 ** Also affects: transmission via https://bugzilla.gnome.org/show_bug.cgi?id=634805 Importance: Unknown Status: Unknown ** Project changed: transmission = pango -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: pango Status: Unknown = New ** Changed in: pango Importance: Unknown = Medium -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Some more suggestions on a possible workaround, from the cairo bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31589#c3 -- excerpt -- If you want ghosted text rendered at 0.5 alpha, then just render the text at 0.5 alpha. This avoids all use of the stroker. :) There are likely other methods to get shadows or ghosted text suitable for you, not involving the stroker, so if using a temporary image surface isn't a viable option, then perhaps investigating those in the context of your app might be a way forward? Please drop by the #cairo irc channel on freenode or post to the cairo-l mailing list if feel like it. -- end excerpt -- -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage
I did not undertand what he is proposing with the first line... -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
It looks like if you could have the cairo stroker use a temporary surface in this case, it would be much faster than direct rendering. The major CPU in this bug is spent in a tesselating function. Long story short, it looks like there are ways to avoid activating that function. The function is used when cairo renders to xlib or xcb, which I imagine is what murrine does now. This quote indicates that drawing to a temporary surface and copying from there should help a lot (future cairo optimizations may fix this): .. (T)he rasterization method (new in 1.10) used by the image backend can deal with self-intersecting polygons just fine, so there's no need for tessellating the outline polygon. .. from cairo bugzilla on this issue at https://bugs.freedesktop.org/show_bug.cgi?id=31589#c3 I assume that rendering to a temporary surface will use this faster image backend (6 or 7 times faster in transmission-gtk+murrine, according to cairo profiling tools I've used.) Before I dig deeper, can you tell me something about this code: pango_cairo_layout_path (cr, layout); murrine_set_color_rgba (cr, temp, 0.5); cairo_stroke (cr); .. you mentioned pango_cairo_layout_path (cr, layout); is slow. Is that definite, or could it be cairo_stroke(cr); Thanks! -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Bug watch added: GNOME Bug Tracker #634881 https://bugzilla.gnome.org/show_bug.cgi?id=634881 ** Also affects: transmission via https://bugzilla.gnome.org/show_bug.cgi?id=634881 Importance: Unknown Status: Unknown ** Project changed: transmission = gtk -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Hmm, pango might be involved in this too (rendering lots of curvy text via cairo? guessing) This response from cairo on our current topic (mentioning pango_cairo_layout_path(), and the high CPU usage in transmission-gtk being in _cairo_bentley_ottmann_tessellate_polygon()) suggests rendering to a temporary surface as a workaround, thanks M Joonas Pihlaja: https://bugs.freedesktop.org/show_bug.cgi?id=31589#c1 -- excerpt -- From the code path snippet provided, I expect what's happening is that the outline path involves lots of curves, and unfortunately those cannot be fastpathed to bypass the stroker's call to tessellate the stroked outline when using the xlib surface. In any case, the image backend uses a different rasterisation method in 1.10 so the regression doesn't occur as much, so a possible workaround might be to use a temporary image surface to render the strokes. -- end excerpt -- The cairo-perf-trace at the end of https://bugs.launchpad.net/ubuntu/+source/transmission/+bug/655024/comments/31 seems to confirm that. It looks like rendering to image rather than directly to xlib or xcb is about 7.62 times faster. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
it is used by the app developer to change the color of the text (for example the dialog appearing when you press the power button on your laptop. with suspend, hibernate etc etc) drawing the cairo path seems to eat the cpu, don't know if that's a cairo or a pango bug. murrine is just requesting it, not sure if there's another way to do the same thingcomunque -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
just thing not thingcomunque (middle click pasting) :) -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
More diagnostics: this is the output of perf top during a transmission run with paused torrents. The CPU usage reported by regular top fluctuates between 24% and 48% for the transmission-gtk process. The attachment shows _cairo_bentley_ottmann_tessellate_polygon() using the most: 50.5% (of the non-idle CPU time, I suppose.) ** Attachment added: output of perf top during transmission run with paused torrents https://bugs.launchpad.net/ubuntu/+source/transmission/+bug/655024/+attachment/1731837/+files/perf_top.txt -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Bug watch added: freedesktop.org Bugzilla #31589 http://bugs.freedesktop.org/show_bug.cgi?id=31589 ** Also affects: transmission via http://bugs.freedesktop.org/show_bug.cgi?id=31589 Importance: Unknown Status: Unknown ** Project changed: transmission = cairo ** Project changed: cairo = libcairo -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
(Just skimming, in http://library.gnome.org/devel/pango/stable/pango- Cairo-Rendering.html, in description of pango_cairo_create_layout (): This function is the most convenient way to use Cairo with Pango, however it is slightly inefficient since it creates a separate PangoContext object for each layout. This might matter in an application that was laying out large amounts of text. The current bug does not involve large amounts of text, so that description does not apply or is inaccurate; or it may not apply to the current bug: I haven't yet checked pango/cairo in the murrine source.) -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
More dianostics; might be completely normal: Did cairo-trace --profile transmission-gtk. Got these errors, which were exactly replicated on a following run of plain transmission-gtk: (transmission-gtk:5936): Gtk-CRITICAL **: IA__gtk_tree_selection_selected_foreach: assertion `GTK_IS_TREE_SELECTION (selection)' failed (transmission-gtk:5936): Gtk-CRITICAL **: IA__gtk_tree_selection_selected_foreach: assertion `GTK_IS_TREE_SELECTION (selection)' failed (transmission-gtk:5936): Gtk-CRITICAL **: IA__gtk_tree_selection_get_tree_view: assertion `GTK_IS_TREE_SELECTION (selection)' failed (transmission-gtk:5936): Gtk-CRITICAL **: IA__gtk_tree_view_get_model: assertion `GTK_IS_TREE_VIEW (tree_view)' failed (transmission-gtk:5936): Gtk-CRITICAL **: IA__gtk_tree_model_iter_n_children: assertion `GTK_IS_TREE_MODEL (tree_model)' failed Then did lzma -cd transmission-gtk.5906.lzma transmission-gtk.trace, and cairo-perf-trace transmission-gtk.trace: [ # ] backend test min(s) median(s) stddev. count [ 0] xcb transmission-gtk 13.842 13.959 0.65%6/6 [ 0] xlib transmission-gtk 12.829 12.993 0.61%6/6 [ # ]image: pixman 0.18.4 [ 0]image transmission-gtk1.7761.782 0.20%5/6 [ # ] image16: pixman 0.18.4 [ 0] image16 transmission-gtk1.7461.755 0.32%6/6 .. was hoping to get GL backend tests, but that's all I've got for now .. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I am not so practice of these tests, what do you suggest? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I would like a complete trace of a run of transmission-gtk that would show whether libcairo is spinning its wheels, or rather some other code is banging on libcairo, because it looks like cairo's the CPU-consumer. pango_cairo_create_layout() may be more inefficient than in its description; a documentation bug? If so, don't use it here. If you use that method for text shadows, a performance hit might only be noticeable in long-term-shadowing, like paused transmission torrents, as compared to temporary actions like menu dropdowns (just guessing) where a performance hit would go unnoticed. But if so (if pango/cairo layout is the slowdown), murrine, or, transmission will have to just go italic (I think you can think of a dozen better options :) -- or a special rule for transmission -- until such time as pango/cairo speeds up this path. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
murrine is just using: pango_cairo_layout_path (cr, layout); murrine_set_color_rgba (cr, temp, 0.5); cairo_stroke (cr); to draw the layout. pango_cairo_layout_path (cr, layout); is slow, calling pango_cairo_show_layout (cr, layout) completely fixes the issue, but then will break text using span ... whatever -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Does span .. define user-responsive elements? That has to be quick. We are talking *slow* -- whatever is happening is gobbling 20% of 2000 MHz, or 400 M per sec, on my system. On a lighter note, the assertion failures mentioned above are not consistent, happening perhaps 15% of the time, no failures otherwise. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
pango_cairo_layout_path (cr, layout) call is slow. I don't know if that's a problem in cairo, or if I should not use it. I'm using it in murrine for high-quality text shadows -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Changed in: murrine Status: Unknown = New ** Changed in: murrine Importance: Unknown = Medium -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
it appears to be one of the torrent cell renderers. transmission uses three of them: gtk_cell_renderer_text, gtk_cell_renderer_progress, and gtk_cell_renderer_pixbuf. My first semi-blind guess would be the progress renderer. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
It's the GtkTreeView widget. A ghosted display is rendered when the GtkCellRendererText/Pixbuf/Progress elements making up the display of a torrent cell have the sensitive property false. This occurs with torrents that are not in an error state and are paused. That code is in transmission's gtk/torrent-cell-renderer.c, in render_compact() and render_full(). -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
could be the text. will invesigate -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Bug watch added: GNOME Bug Tracker #634308 https://bugzilla.gnome.org/show_bug.cgi?id=634308 ** Also affects: transmission via https://bugzilla.gnome.org/show_bug.cgi?id=634308 Importance: Unknown Status: Unknown -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
** Project changed: transmission = murrine -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
which widget is causing the slowdown? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
cwall's new username is veldt. I'm thinking this might be a bug for light-themes instead, considering that the ambiance theme triggers it. In potentially-unrelated bug #663848 in light-themes, there is mention: https://trac.transmissionbt.com/browser/trunk/gtk/torrent-cell- renderer.c is the Transmission code that does the renderering for these screenshots. As you can see, there are two GtkCellRendererTexts -- one for errors, and one for non-errors. Looking at that and other code, I'm trying to find how a torrent is marked as paused and what routine in transmission finally delegates the rendering of such a torrent, so I can follow it a bit deeper (e.g. into gtk or cairo.) I'd be glad if someone could tell me. On another tack, if there is any valgrind/strace/gdb/profiling that might help, I'll try to find the time to do so. (Hmm, I'd _love_ to find out exactly what path is leading to ~85% overhead courtesy of libcairo -- I haven't got the source to the ambiance theme yet.) Other users with the high-CPU bug have different video chips, but just in case, mine (from Xorg.0.log) is: Chipset: ATI Radeon XPRESS 200M 5955 (PCIE) (ChipID = 0x5955), running compiz. System is up-to-date ubuntu 10.10 maverick installed bare from maverick- beta, on an HP Pavilion zv6130us laptop, running transmission 2.11+9713~maverick1 nightly, behaving the same as versions back to 2.04-0ubuntu2. How common is it for people to pause torrents? If it's common, and if ubuntu 10.10 maverick is in widespread use, we should be seeing lots of complaints (soon?) -- unless it's something about my system, like my video chip or chipset. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
A user in IRC had some more information about this. After some testing, it looks like this might be an issue in the Abiance them theme. Could one or more people CCed to this list who are seeing this problem test this out to confirm/refute? That is, change the theme while using Transmission and compare the CPU use? Highlights from the IRC chat: 17:00:45 cwall top shows transmission taking over -- e.g. 87% cpu on athlon 3200+ -- if I pause enough torrents. Perhaps 5% more cpu per paused torrent added. 17:20:05 @charles cwall: are you running the gtk client or the daemon? 17:20:13 cwall The gtk client. 17:20:50 @charles cwall: then my second question is, could you exit the gtk+ client and start running the same set of torrents in headless mode this way: transmission-daemon -f -g $HOME/.config/transmission 17:21:05 @charles that way we can find out whether the slowdown is coming from something in the gui, or from libtransmission 17:32:37 cwall No noticeable cpu usage with transmission-daemon; I haven't confirmed that the torrents are still paused, but I did not unpause them. 18:25:08 cwall # Events: 59K cycles 18:25:17 cwall # Overhead Command Shared Object Symbol 18:25:24 cwall 83.68% transmission-gt libcairo.so.2.11000.0 [.] 0x017cda 18:27:14 @charles ...cwall a mad thought: what happens if you change your desktop theme from the ubuntu default to something else, like clearlooks 18:27:31 @charles on Fedora this is done via System Preferences Appearances Theme 18:27:40 @charles probably something similar to that in Ubuntu 18:53:49 cwall Ok! transmission-gtk uses negligible cpu with clearlooks theme (and visual effects none and no subpixel font smoothing (laptop)). 19:00:23 cwall Re-enabled visual effect and font smoothing with no slowdown; going from clearlooks to ambiance made transmission cpu rocket up. The cpu usage with paused torrents occurs right away. 19:00:39 cwall right, well, certainly i have a workaround. gtk, eh. :) -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Here is my experience - incase it helps: The interface seem extremely sluggish. Clicking, selecting, scrolling events are delayed; the menus too. Even just un-minimising cause a very noticeable delay in window redraw. Some info: - I upgraded from 10.04 to 10.10 (I had no problem with transmission on 10.04) - I tried updating from their ppa to version 2.10. Still no improvement. - I don't have proprietary driver installed (Ubuntu repo doesn't support my card - 310M) - No other apps have this sluggish behavior. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I've just removed some idle torrents from the list. Went from 13 to 3. This greatly improved response and reduced laggyness. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Hi guys! I removed .config/transmission folder, that did not help me, so it is not old config fault. Cheers, Janis -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
This is a little bit of work, but judging from the duplicate tickets this is a problem for a few people, and I haven't been able to trigger this behavior yet. So if somone could try the following: 1. Install transmission-dbgsym (or transmission-dbg) as Kryzysztof described in comment #18 2. Install valgrind 3. Invoke transmission from the command-line this way: valgrind --tool=cachegrind transmission and log a session where Transmission reports the abnormally high load. (Note: valgrind generates a *lot* of load on its own, so this step requires a little patience :) 4. After you exit Transmission, valgrind will genrate a file named cachegrind.out.. Please attach that file to this ticket *and make sure to say what version of Transmission you used*. I haven't walked users through this process before, so this is an experiment. Let's see how it goes. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
1) Start up transmission with a few torrents and paste the top command file here. Do it with the following command while transmission is runningthen paste the file as an attachment to the site here. top -bn1 ~/Desktop/Top-Command (This will put the output file on your desktop.) 2) You say the interface is laggy? This should not be the case with such a small amount of CPU usage. What graphics card is installed on your computer? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Okay, I captured it while the cpu was spiking. It's lowest is about 4%. It had 2 torrents queued up, both of them were inactive. As I mentioned in a previous post, I'm using an ATI Radeon 9600 Pro using the Xorg r300 drivers, default to Maverick. Other programs don't seem to be as laggy as Transmission. It's like the program itself needs a second before it will register any clicks to it. I've started using renice on it so that everything will work more smoothly while I'm downloading torrents, but I'm going to start looking for other clients to use soon if this keeps up. ** Attachment added: Top-Command https://bugs.edge.launchpad.net/ubuntu/+source/transmission/+bug/655024/+attachment/1679935/+files/Top-Command -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Transmission 2.04 is also very laggy for me. The download/upload speeds are ok, but the gui is terribly slow. It takes 0.5-2 seconds while the app respond to any clicks (eg. pause/start or changing priority of files in the torrent etc. All other apps are fine. I have an Asrock A330ION mainboard (Intel® Dual-Core Atom™ Processor 330 1.6 GHz, NVIDIA® MCP7A-ION Chipset, Integrated NVIDIA® GeForce 9 Series using DVI-I at 1400x900), 2 GB RAM, unmodified Maverick RC (updated every day), default Transmission settings (as I can recall). Please tell me if you need more info or if I can help in any way. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
would it be possible to install the transmission-debug package and then run transmission inside of valgrind? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
It's transmission-dbgsym (or transmission-dbg if you are using Transmission from the PPA). To learn how to enable ddebs repository (which is required in order to install dbgsym packages) , please refer to this page: https://wiki.ubuntu.com/DebuggingProgramCrash -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage
@Kilmonda No, I'm using an ATI Radeon 9600 using the Xorg r300 drivers. @RedSingularity I did like you asked, I purged every transmission package I had installed, and reinstalled transmission-gtk. I still get the the slow down. It seems for every paused torrent I have added to the list, the cpu increases another 1%. The interface is really laggy, so I'm thinking this might be a gui/gtk issue. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Ok please do the following. 1) Start transmission from the terminal and post the terminal output here. 2) While in transmission go to EditPrefs And select Limit upload speed Make it 50 KB/s. Then quit. 3) With the upload speed changed try using the program again and see if there is a difference. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage
1) There wasn't any terminal output when starting transmission, but when closing it I got: (transmission:19808): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.26.0/gobject/gsignal.c:2392: instance `0x9192858' has no handler with id `725` 2) I had already had it limited to 10 KB/s, and turning it 50 didn't change anything, neither did turning off the limiter. I've figured out the the number of torrents affects the cpu usage. When I only have 2 torrents queued up, regardless of running or not. Transmission uses 4-8%, and another 1-2% is added for every torrent that is added to list. For some reason, paused torrents are using cpu resources. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage
I haven't done anything. I have about 20 inactive torrents, but they are stopped. No download/upload. Are you asking me to delete my settings folder? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage
Okay, I renamed .config/transimssion, and now transmission starts up fast. But the moment I start some torrents and pause them. The cpu jumps up to around 8-15%, even when they aren't running. So I don't think any of my settings have anything to do with this. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Are you looking at the transmission process under system monitor processes tab? If so, i followed what you said you have done and I don't notice a problem. CPU percentage stays in a range of 0-5%. Gnome system monitor is actually using more than the transmission client. Are you using a Fresh 10.10 install or did you upgrade from 10.04? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 655024] Re: Using higher cpu usage
Actually, I was using top from the commandline. And I've been using Maverick since Alpha 1. Transmission only started doing this in the last month or so. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Do you have an NVIDIA gpu and if so are you experiencing the issue while using the latest 260.19.06-0ubuntu1 drivers, if you use the proprietary drivers at all. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
It does not seem to be a reproducible bug on a freshly installed system so I cannot confirm it. How about removing the package and purging all configuration files then reinstalling? If you want you can do the following::: sudo apt-get autoremove --purge transmission then search for any residual files from the program and remove if necessary sudo find / -name transmission* .then reinstall the program sudo apt-get install transmission See if that corrects the problem. -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I'm not seeing this behavior. Do you have any tips on how to make it happen? Does it happen even if there are no torrents loaded? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
I do not see this behavior either. Is any of the bandwidth limiting options being selected and used? -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
Thank you for reporting this bug and helping to make ubuntu better. If possible can you provide a step by step guide to reproduce this bug? This will make confirming it a lot easier. Thanks! ** Changed in: transmission (Ubuntu) Status: New = Incomplete -- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 655024] Re: Using higher cpu usage
-- Using higher cpu usage https://bugs.launchpad.net/bugs/655024 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
