Re: X using ~ 35% of a CPU core
On Tue, 2015-12-01 at 18:14 -0500, Celejar wrote: > tried tailing the X log when I caught the problem occurring, and I > found zillions of these: > [snipped log] > > When the problem ceases (CPU usage back down to zero / normal), these > lines cease, too. Anyone know what this is, and / or how to fix it? I think a bug report would be in order. As for a work-around, maybe it's possible to turn off logging for X, or at least make it less verbose? It might be the case that the bug is actually fixed in a later version of the intel driver, but that might necessitate an upgrade to testing... -- Cheers, Sven Arvidsson http://www.whiz.se PGP Key ID 6FAB5CD5 signature.asc Description: This is a digitally signed message part
Re: X using ~ 35% of a CPU core
On Wed, 02 Dec 2015 15:49:40 +0100 Sven Arvidssonwrote: > On Tue, 2015-12-01 at 18:14 -0500, Celejar wrote: > > tried tailing the X log when I caught the problem occurring, and I > > found zillions of these: > > > [snipped log] > > > > When the problem ceases (CPU usage back down to zero / normal), these > > lines cease, too. Anyone know what this is, and / or how to fix it? > > I think a bug report would be in order. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=806929 > As for a work-around, maybe it's possible to turn off logging for X, or > at least make it less verbose? > > It might be the case that the bug is actually fixed in a later version > of the intel driver, but that might necessitate an upgrade to > testing... Thanks for the help and suggestions. I'll see if I get any response from the maintainers. Celejar
Re: X using ~ 35% of a CPU core
On Mon, 30 Nov 2015 21:47:43 +0100 Sven Arvidssonwrote: > On Mon, 2015-11-30 at 13:44 -0500, Celejar wrote: > > Hi, > > > > On my ThinkPad T61 (Core 2 Duo T7300 @ 2.00GHZ) running Debian stable > > (8.2) with Xfce, the X process (/usr/bin/X) has recently begun to > > consume some 35% (seems to vary between 33-40 %) for several minutes > > at > > a time, with the system becoming unpleasantly unresponsive during > > this ... > Long shot, but maybe it's something similar to this? Probing for new > screens after resume and spamming a log before giving up? > > https://bbs.archlinux.org/viewtopic.php?id=204098 > > Would be interesting to know where the X process spends all that time, > but I guess you would need to profile it to find out. Thanks for the tip! My problem is actually at least somewhat similar. I tried tailing the X log when I caught the problem occurring, and I found zillions of these: [ 82198.046] (II) intel(0): EDID vendor "LEN", prod id 16435 [ 82198.046] (II) intel(0): Printing DDC gathered Modelines: [ 82198.046] (II) intel(0): Modeline "1440x900"x0.0 96.50 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (56.6 kHz eP) [ 82198.046] (II) intel(0): Modeline "1440x900"x0.0 80.44 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (47.2 kHz e) [ 82198.084] (II) intel(0): EDID vendor "LEN", prod id 16435 [ 82198.084] (II) intel(0): Printing DDC gathered Modelines: [ 82198.084] (II) intel(0): Modeline "1440x900"x0.0 96.50 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (56.6 kHz eP) [ 82198.084] (II) intel(0): Modeline "1440x900"x0.0 80.44 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (47.2 kHz e) [ 82198.166] (II) intel(0): EDID vendor "LEN", prod id 16435 [ 82198.166] (II) intel(0): Printing DDC gathered Modelines: [ 82198.166] (II) intel(0): Modeline "1440x900"x0.0 96.50 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (56.6 kHz eP) [ 82198.166] (II) intel(0): Modeline "1440x900"x0.0 80.44 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (47.2 kHz e) ... [ 82198.574] (II) intel(0): EDID vendor "LEN", prod id 16435 [ 82198.574] (II) intel(0): Printing DDC gathered Modelines: [ 82198.574] (II) intel(0): Modeline "1440x900"x0.0 96.50 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (56.6 kHz eP) [ 82198.574] (II) intel(0): Modeline "1440x900"x0.0 80.44 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (47.2 kHz e) [ 82198.662] (II) intel(0): EDID vendor "LEN", prod id 16435 [ 82198.662] (II) intel(0): Printing DDC gathered Modelines: [ 82198.662] (II) intel(0): Modeline "1440x900"x0.0 96.50 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (56.6 kHz eP) [ 82198.662] (II) intel(0): Modeline "1440x900"x0.0 80.44 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (47.2 kHz e) [ 82198.710] (II) intel(0): EDID vendor "LEN", prod id 16435 [ 82198.710] (II) intel(0): Printing DDC gathered Modelines: [ 82198.710] (II) intel(0): Modeline "1440x900"x0.0 96.50 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (56.6 kHz eP) [ 82198.710] (II) intel(0): Modeline "1440x900"x0.0 80.44 1440 1522 1576 1706 900 905 914 943 -hsync -vsync (47.2 kHz e) When the problem ceases (CPU usage back down to zero / normal), these lines cease, too. Anyone know what this is, and / or how to fix it? I found this: https://forums.gentoo.org/viewtopic-t-716774-start-0.html But I don't have anything like his xrandr script running, and my problem is intermittent - it starts and stops at apparently random times. > Sven Arvidsson Celejar
X using ~ 35% of a CPU core
Hi, On my ThinkPad T61 (Core 2 Duo T7300 @ 2.00GHZ) running Debian stable (8.2) with Xfce, the X process (/usr/bin/X) has recently begun to consume some 35% (seems to vary between 33-40 %) for several minutes at a time, with the system becoming unpleasantly unresponsive during this time. It seems to mostly happen after resuming from suspend-to-ram, and usually clears up after a few minutes with the system performance returning to normal. I run mostly straightforward stable, albeit with self-compiled kernels from upstream (vanilla). I first noticed the problem on 4.1.13 and am now seeing it under 4.2.6. I don't think I've seen this behavior in the past, and I'm not sure what has triggered it. I see it even when not running much of a load under X at all, e.g., just recently, when all I had running was Xfce Terminal, Sylpheed, and one (simple, small) OpenOffice writer document. Any idea what this is, or how I can fix / troubleshoot? Thanks, Celejar
Re: X using ~ 35% of a CPU core
On Mon, 2015-11-30 at 13:44 -0500, Celejar wrote: > Hi, > > On my ThinkPad T61 (Core 2 Duo T7300 @ 2.00GHZ) running Debian stable > (8.2) with Xfce, the X process (/usr/bin/X) has recently begun to > consume some 35% (seems to vary between 33-40 %) for several minutes > at > a time, with the system becoming unpleasantly unresponsive during > this > time. It seems to mostly happen after resuming from suspend-to-ram, > and > usually clears up after a few minutes with the system performance > returning to normal. I run mostly straightforward stable, albeit with > self-compiled kernels from upstream (vanilla). I first noticed the > problem on 4.1.13 and am now seeing it under 4.2.6. I don't think > I've > seen this behavior in the past, and I'm not sure what has triggered > it. > I see it even when not running much of a load under X at all, e.g., > just recently, when all I had running was Xfce Terminal, Sylpheed, > and > one (simple, small) OpenOffice writer document. Any idea what this > is, > or how I can fix / troubleshoot? > > Thanks, > Celejar Long shot, but maybe it's something similar to this? Probing for new screens after resume and spamming a log before giving up? https://bbs.archlinux.org/viewtopic.php?id=204098 Would be interesting to know where the X process spends all that time, but I guess you would need to profile it to find out. -- Cheers, Sven Arvidsson http://www.whiz.se PGP Key ID 6FAB5CD5 signature.asc Description: This is a digitally signed message part