** Changed in: unity (Ubuntu)
Assignee: Jason Smith (jassmith) = Ron Karoles (rkaroles)
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Title:
Gradual degradation in desktop performance.
** Changed in: unity (Ubuntu Oneiric)
Status: Triaged = Won't Fix
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Title:
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The version of nux in oneiric-proposed has been removed as this bug
report was not verified in a timely fashion.
** Changed in: unity (Ubuntu Oneiric)
Status: Fix Committed = Triaged
** Tags removed: verification-needed
** Tags removed: removal-candidate
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I'm not using Oneiric any more, but Quantal is perfoming well for me
(apart from unity-compiz hanging and needing restarting sometimes, but I
suspect that's an intel driver issue). Has Quantal got the same fix as
Oneiric? The only times I've noticed performance degradation in Quantal
is after an
It looks like this problem is finally resolved and released in Ubuntu
Quantal: http://www.ubuntuupdates.org/bugs?package_name=libnux-3.0-0
This Bug is a very entertaining read: thank you Chauncellor for detailed
problem description.
Thank you, Daniel van Vugt, for keeping cool at all times.
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The verification of the fix for this bug in oneiric-proposed never
occurred so I am setting the task back to Fix Committed. It'd be great
if somebody could test the package from -proposed so we can release the
fix.
** Changed in: unity (Ubuntu Oneiric)
Status: Fix Released = Fix Committed
I'm experiencing the same problem in Precise, with a Dell XPS 15.
In my case, degradation is noticeable from the moment I open an
application. Also, I noticed today (as im writing this) that the
performance goes smoother witouth t he power connected to the laptop,
working on battery power. My
Saul, You should look around for a bug report regarding your issue. If
you cannot find one then please open a new bug report by running
'ubuntu-bug compiz'.
This report has been resolved so it's not much use.
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And FYI, the fix for this appears in precise in nux version
2.2.0-0ubuntu1. Though it wasn't mentioned in the changelog...
nux (2.2.0-0ubuntu1) precise; urgency=low
* New upstream release.
- Dash - Behaviour of the 'All' button in the Dash filters broken in
several ways (LP:
** Changed in: unity (Ubuntu Oneiric)
Status: Fix Committed = Fix Released
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Title:
Gradual degradation in desktop performance.
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nux (1.16.0-0ubuntu1.2) oneiric-proposed; urgency=low
* NuxGraphics/RunTimeStats.cpp:
- Gradual degradation in desktop performance. (LP: #888039)
-- Omer Akram om2...@ubuntu.com Thu, 09 Feb 2012 20:56:12 +0500
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staging ppa is for precise only.
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Omer, thanks.
Are you sure of explanation?
I followed
http://www.omgubuntu.co.uk/2012/01/how-to-install-unity-5-0-in-
ubuntu-11-10/
where it says to install ppa:unity-team/staging
But indeed, it did not work... ;-)
What are my alternatives? Do I need to compile unity 5.4 myself or do
you
Andre, you can't compile 5.4 simply as that would need quite a few other
things like compiz, nux libunity and prolly a few others as well. You
could try Precise Pangolin Beta-2 set to release thursday, 1st of March.
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Omer, thanks, I get it.
I read about it and did not found a solution. I tried the Alpha2 of
Precise Pangolin which is indeed a lot snappier.
I will try the Beta-2 next week. If it is stable enough I will run it.
Otherwise I'll just wait for the final release. In fact, unity 4 in
Ubuntu 11.10 is
Hi Jason Maciej,
I purged Daniel's PPA and tried ppa:unity-team/staging in order to apt-
get update apt-get-upgrade to the latest unity version. Strange
enough it did not update my unity version which is still 4.28.0.
What did I do wrong?
I also tried the alpha 2 of Ubuntu 12.04 for some
Hi, I'm using Daniel's PPA for few days now and my Unity became usable
again but I'm experiencing the same problem as Andre. I can't find any
updates for both unity and nux in oneiric-proposed. Was it released, or
the fix is only for 12.04?
dpkg -s nux-tools
...
Hi everybody,
Daniel, I have your used your unity PPA for some time now (+/- 2 weeks).
My first impression was that it solved the problem, but after some hours
the bug just returned.
Window movement gets very slow after using unity for some time (some
hours max). When it occurs I can see all
There is an unrelated bug dealing with an improper freeing in unity that
resulted in memory corruption. This memory corruption results in
behavior similar to what you described. A fully up to date unity without
PPA's will resolve the issue.
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Thanks Jason, I will try updating unity to the newest version available
without the PPA from Daniel.
Do you happen to know the ID of the bug you are describing?
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Hello Chauncellor, or anyone else affected,
Accepted nux into oneiric-proposed. The package will build now and be
available in a few hours. Please test and give feedback here. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Thank you in
** Branch linked: lp:ubuntu/oneiric-proposed/nux
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Uploaded:
https://launchpad.net/ubuntu/oneiric/+queue?queue_state=1queue_text=nux
Subscribed ubuntu-sru as well, somebody from that team will review and
approve the upload next and update the bug asking for testing when that
happens (probably next week though since it's friday)
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Merged into lp:nux/1.0 at revision 499
** Changed in: unity (Ubuntu Oneiric)
Status: Triaged = Fix Committed
** Changed in: unity (Ubuntu Oneiric)
Assignee: (unassigned) = Daniel van Vugt (vanvugt)
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** Branch linked: lp:~om26er/ubuntu/oneiric/nux/sru-888039
** Description changed:
- edit - This bug has been scoped down to a particular std:vectorint
- growing out of control inside of nux. Any report about degrading
- performance not related to this should be filed as new bugs. :) Thanks
-
** Also affects: unity (Ubuntu Oneiric)
Importance: Undecided
Status: New
** Changed in: unity (Ubuntu Oneiric)
Importance: Undecided = High
** Changed in: unity (Ubuntu Oneiric)
Status: New = Confirmed
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** Changed in: unity (Ubuntu Oneiric)
Status: Confirmed = Triaged
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dpkg -s unity returns :
version: 4.28.0-0ubuntu2
...
Does this mean I did not get the update yet ? 5.2.0 seems so far away ?
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AndreK, you appear to not have the fix installed. You need to be using
ppa:vanvugt/unity to get the fix for oneiric;
https://launchpad.net/~vanvugt/+archive/unity
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I suspected that - when does fix released actually mean it's an actual
update in the standard repository ? when is it expected to be there. ?
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The fix is in Unity 5.2.0 as per comment #117, so it will be in 12.04
when that gets Unity 5.2. A fix has not been proposed for 11.10 yet. I
said I would do so when the fix in my PPA has been sufficiently tested.
Although, please don't shoot the messenger... I'm just doing this
because I care.
I
I'm not sure exactly where I should report it, but Daniel with the
latest version of compiz/unity in your PPA on Ubuntu 11.10, I can run
OilRush fullscreen at virtually the same speed as a non-composited
desktop, provided I use Unredirect Fullscreen Windows (enabled via
ccsm). The composited
Yes, I do believe all the performance-related fixes in my PPAs will be
in Ubuntu 12.04.
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Title:
Gradual degradation in desktop performance.
To
I am confirming that all the perf fixes will be in 12.04. probably some
extra ones too. I am tired of hearing about slow perf and finally have
some free cycles to do something about it. Mmmm yes optimization
goodness here I come.
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Jason, I don't suppose you could improve the fix for this bug to use
std::set instead of std::vector? Or even remove the code completely in
Nux 2.0 as you mentioned in the MP? :)
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I'm still having some issues, I had some performance drop (as in very
lag'y desktop) on thursday or friday before the weekend, and I'm seeing
some symptoms again now.
I'm thinking I may have an other bug if no one else see any regression
after last update .
I'm having trouble reporting in detail
Joar,
Yes, you are likely seeing another bug. If you are still having problems
the best way to proceed will be to open a new bug and attach a perf
profile as was done to pinpoint this one.
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I'm guessing by the silence that the fix seems to be working for
everyone?...
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Title:
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I'm thinking so!
3 you guys.
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I also think it is working great! (I'm using libnux 1.16.0-0ubuntu1.1vv1
and unity 4.28.0-0ubuntu2vv2 which look like the latest versions from
ppa:vanvugt/unity.)
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** Changed in: unity
Status: Fix Committed = Fix Released
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** Branch linked: lp:~ubuntu-desktop/unity/ubuntu
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This bug was fixed in the package unity - 5.2.0-0ubuntu1
---
unity (5.2.0-0ubuntu1) precise; urgency=low
* New upstream release.
- Unity needs a way to switch (tab) between windows on current workspace
(LP: #863399)
- compiz crashed with SIGSEGV in
Just a quick report: Jason's fix and Daniel's packages appear to be
working wonderfully ! Over the past 24 hours, compiz cpu usage has not
climbed and remains steady =4% on both of the machines I work on which
exhibited this problem.
Thank You.
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I will be testing Daniel's ppa over the next few days. I will report
back here on the tests. Also, I will read the HowToTriage, and see what
I can do with those bugs.
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I've installed your packages Daniel, and I'm getting some other
instability. compiz or unity restarts or compiz/unity dies without a
restart. I haven't done any debugging yet on these issues, but I will
continue to look into it.
What is the correct course of action here ?
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its unlikely any instability is being introduced by this bug. Follow
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Title:
Gradual degradation in desktop
Awesome job on this guys!!! I've been waiting to see the resolution of
this bug! Michael, great work on finding the increasing CPU usage over
time! not sure if anyone would have caught that! Awesome job and great
initiative!
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Thank you again, Daniel. I will see what I can do to gather some
data. I have already checked on pstack. Ubuntu packages a version but
only for i386; alas, I am running x86_64. I may be able to setup a
machine at work as a testbed, though.
On Sat, Jan 28, 2012 at 11:51 PM, Daniel van Vugt
Daniel, this seems like exactly the task for a statistical profiler such
as perf (https://perf.wiki.kernel.org/).
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Title:
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I have installed perf, and am gathering some data. I am afraid my data
may be slightly skewed, though, as I am seeing nvidia stuff topping
the list of performance hogs. But, I thought that someone above had
commented that they see the same bug even without nvidia hardware. I
have a couple of
Here is some more data. Before I left work on Friday, I rebooted my
work machine and left it running. Since the reboot, it is now up to
32% CPU usage. This was a clean reboot. I didn't start any other
running process other than ubuntu's default desktop.
I ran perf top -p {compiz PID} :
Thanks. Nux is the graphics library that Unity is built on. And that
std::vectorint::find at the top looks suspicious. Most certainly any
code trying to do such a linear search into a vector will degrade over
time if the size of the vector continues to grow.
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As an aside, I also saw this a awhile ago, and grepped through the
sources to find vectors of ints, but didn't find any in nux, unity or
compiz. Perhaps there's a typedef.
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Yeah... I feel like this is a start. I was hoping to stir the waters a
little bit here.
Eagerly awaiting a fix.
Shouldn't this bug at least be triaged soon ! This is a good lead with
data. I will do what I can to provide more data if someone just tells
me what they need .
On Sun, Jan 29, 2012
More likely std::vectorFoo where typedef int Foo.
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I see 21 different results for vectorint in the nux source. Plus there
will be more from typedefs.
It's a start, but we need more specific information like a call stack
before this bug can be marked as Triaged.
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Subscribing Jay, in case he can shed some light on the issue;
4302.00 96.7% __gnu_cxx::__normal_iteratorint*, std::vectorint,
std::allocatorint std::__find__
libnux-graphics-1.0.so.0.1600.0
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More careful searching of the affected library, and vector near find
yields something worth investigating:
RunTimeStats.cpp:std::vectorint::iterator it;
RunTimeStats.cpp:it = std::find (_texture_2d_array.begin(),
_texture_2d_array.end(), NUX_STATIC_CAST (IOpenGLBaseTexture *,
Admittedly it should probably be using std::set (find = O(lgN)) instead
of std::vector (find = O(N)). But we might be looking at the wrong code
completely...
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I just wanted to say that there is seems to be no evidence of memory
usage growing. I am not sure how a vector could be growing without
memory growing.I guess it could be growing in a pre-allocated space,
though. But another update... the work pc shows compiz now at 47%
since Fri afternoon. I ran
Sorry about the text in the post. I wanted to give you guys something
better, so I ran perf record for a a few seconds. I then perf report
perf_report.
The report is attached. It might be easier to read.
Michael Knap
http://michaelknap.net
Instructor and Researcher
Mathematics and Controls
Im looking into it and have found the primary cause of the problem.
There is a combination of a misbehaving indicator and a GUID loss issue
going on here. I will try to have this resolved today.
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** Package changed: compiz (Ubuntu) = unity (Ubuntu)
** Project changed: compiz = unity
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Title:
Gradual degradation in desktop performance.
To
The linked branch should resolve the issue. Simply put there were a LOT
of 0's in that list. The tracker should have been ignoring GUID 0 (its
not valid and represents a client side texture) but was not accurately
doing this.
** Branch linked: lp:~unity-team/nux/nux.fix-gradual-degrade
**
Great ! Thank you Jason, Daniel, Ben, devs, and others for the work on
this thread this weekend. I hope I have been more helpful then
troublesome. Looking forward to testing a patch soon !
On Sun, Jan 29, 2012 at 10:50 PM, Jason Smith jason.sm...@canonical.com wrote:
Im looking into it and have
Not sure how I can pull and apply the fix. Can you provide some quick
directions ?
On Sun, Jan 29, 2012 at 11:15 PM, Jason Smith jason.sm...@canonical.com wrote:
The linked branch should resolve the issue. Simply put there were a LOT
of 0's in that list. The tracker should have been ignoring
Nice work all. But let's not get too far ahead of ourselves... as real
testing is required to prove that it was this particular bug that was
just fixed.
It's always possible that you're fixing a different bug, or more similar
mistakes exist that also need fixing to resolve the bug.
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** Changed in: unity (Ubuntu)
Status: Confirmed = Fix Committed
** Changed in: unity (Ubuntu)
Importance: Undecided = Critical
** Changed in: unity (Ubuntu)
Assignee: (unassigned) = Jason Smith (jassmith)
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The branch it was committed to was Nux 2.x for precise. Even if you get
it to build it won't be compatible with Unity 4.x in oneiric (which uses
Nux 1.x)
I am backporting the fix to Nux 1.x and oneiric. But have to do it by
hand, which is slow and error-prone. Please be patient.
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Give me a few hours and I'll try to get the fix into ppa:vanvugt/unity
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Title:
Gradual degradation in desktop performance.
To manage
If new bugs are found, please open a new bug report. Do not re-open this
one as it has scoped down to a particular bug in Nux. It would be a
disservice to any other defects to tack them to the bottom of this
report.
** Description changed:
+ edit - This bug has been scoped down to a particular
I will wait patiently until tomorrow. Thank you again so much. What can
I do to help out more (not necessarily with this bug but in general on
launchpad/ubuntu)?
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Michael, it would be very helpful to have another person reviewing and
triaging these bugs:
https://bugs.launchpad.net/ubuntu/+source/compiz/
https://bugs.launchpad.net/ubuntu/+source/unity/
There are a lot, but you may be able to find and cross some off as
duplicates. Others may be so old they
Thanks again Daniel ! I have already downloaded the bzr branch that
Jason linked to, but I'm having a hell of a time getting all the dev
packages needed to compile. Is there a better way to get all the dev
dependencies from the source code branch ?
Michael Knap
http://michaelknap.net
Instructor
Finished backporting Jason's fix to oneiric. It is building and will become
available in the next few hours in:
ppa:vanvugt/unity
You will know you've got the fix when your nux packages get upgraded to:
1.16.0-0ubuntu1.1vv1
If everyone is happy that the fix works for them, I will propose it
Michael, to find the cause of high CPU usage you need a profiler, not a
debugger.
Most profilers need special code compiled in to your application, but Valgrind
has a plugin Callgrind that works with any existing binary (as do all valgrind
plugins):
Thank you Daniel,
I am installing valgrind now. I have used a profiler for another
language. I 'll see what I can learn with google and man. On the
other hand, if I am attached to the running compiz with gdb, is there
a way to state the currently running function ? I would still like to
test my
Michael, I thought about it and using a debugger may be appropriate.
Because callgrind (and valgrind in general) will slow down compiz/unity
to an almost unusable speed. You won't want to run it that way for long
enough to even reproduce the gradual degradation. Also, the gradual
degradation will
I just wanted to chime in here. I've been searching for this bug on
Launchpad for some time ! There are so many compiz / unity bugs, there
seems to be a lot of noise on each bug report with intersecting
symptoms. This makes it so hard to really identify and isolate a
particular bug ! Anyway, I
I was trying to add two sets of data to my last post. Here is the other
one. Please note the titles in the plots.
What I would like to learn to do if a developer could point me in that
direction is attach to the compiz process, and actually try to see what
is process in compiz is eating the CPU.
I should add that if I shutdown my Natty box, reboot into the Oneiric
partition, then I get the same previous results: a linearly increasing
CPU usage with compiz. So, it is not machine-dependent.
Finally, on an Oneiric install with the same nvidia hardware, but not
running TwinView, I have not
I just wanted to chime in here. I've been searching for this bug on Launchpad
for some time !
There are so many compiz / unity bugs, there seems to be a lot of noise on
each bug report
with intersecting symptoms. This makes it so hard to really identify and
isolate a particular
bug !
There's a lot of work being done here, and there are a few canonical
engineers that are working day in and day out on Compiz. Don't take the
work they do lightly; Compiz was an unmaintainable mess when it was
inherited; They're trying to sort it out.
Regardless, this bug report should not be
Chauncellor, are you running Twinview by any chance ?
Michael Knap
http://michaelknap.net
Instructor and Researcher
Mathematics and Controls Engineering
Center of Excellence in Information Systems
Tennessee State University
On Fri, Jan 27, 2012 at 10:12 PM, Chauncellor
No.
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UPDATE: I see degradation with vv8 as well. Difference between now and the xmas
holiday is that my computer hasn't been in idle.
So I'll upgrade to vv10 again and see how things go .
I'll try and register some more data running vv10 this time (memory usage and
so on) and see how things go.
Btw.:
Daniel: I may have been unclear, I've always reboot'ed after each upgrade from
your ppa. F.example when I came back from xmas and upgraded from vv8 - vv10 I
tok a reboot, and I did the same now after downgrading (I rebooted) .
A reboot always help, and as described initially in this bug report I
I see regression with the latest vv10 update . I was running vv8 before xmas,
had a week holiday and when I came back (my computer was on for the whole time)
my computer was still responsive and I noticed no lag. After I upgraded to vv10
monday 2. january (I missed vv9 'cause I was away) I've
I found compiz, compiz-core, compiz-gnome, compiz-plugins-default and
libdecoration0 version vv8 in my apt cache, I'll downgrade and see how
that'll work out.
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Joar, it does sound like this is your bug. In that case, you are likely
to confuse the situation by downgrading.
Please try sticking with vv10 and just rebooting first. If rebooting
solves the problem then you do have this bug. Changing your package
versions will confuse the situation and make it
The issue with ppa:vanvugt/compiz causing animations to play in slow-
motion should now be fixed if you update to ppa:vanvugt/compiz version
1:0.9.6+bzr20110929-0ubuntu6vv8.
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Sounds like a problem with I/O, which I noticed a long time ago in
11.04. Unity and/or compiz seems to be severely affected by a busy disk.
I agree it makes no sense -- why should the GUI be affected by disk
activity at all... ? The bug description only mentions an increase of
200MB. While that's
It's not just caused by high I/O, though. I have the staggering windows
problem at the moment after a suspend/resume cycle and atop -d shows
/dev/sda at only 1%-2% activity.
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Most definitely not involved with I/O. I am very much thinking that any
I/O issues are related to the CFQ scheduler as its sluggishness is well-
known and documented in bug 381300. While it's marked as fix released a
plethora of individuals have claimed that the issue persists. If they
are certain
I don't think this is linked to swap activity. I'll have to let my
computer stay on overnight to make sure, but I've never seen my computer
use more than half my ram (and I only have 4GB), let alone start using
swap space.
The only time I've even seen swap space used is that a couple kilobytes
OK then. If there is an issue related to swapping, please discuss it
elsewhere.
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Title:
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Although peter huwe said in comment #25 that he sees degradation when
swap is not in use, I suspect that the degradation tends to happen on my
system when swap starts being used, almost as if compiz/unity is having
its data swapped out to disk which then slows it down. Typically on my
system some
I don't think my problem is bug 773861 since the decrease in updates of
window movement decays over time, and is perfectly fast for the first
few hours of use. I've subscribed to bug 770160 though.
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Well I got my window moving bugs (it was a mouse polling issue) and
screen tearing issues all figured out, but it turns out that I actually
DO have this bug after all- it just wasn't the cause of my other issues.
After leaving my laptop on overnight will downloading a torrent, I
noticed that
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