[Bug 30557] Re: cpu idle time in /proc/stat wrong
I'm not an IT guy, but I am having problems with high CPU usage. Always over 90% on a fairly new install of Ubuntu running on a Pentium 4 on a Toshiba Satellite 1905-s301. What I did come to realise is that it happens only when I 'look' at the system monitor resources. I updated the preferences: graph update rate to 10 sec, Process update rate to 17sec, and File system to 29sec. Now my CPU History graph slips by at a cool 15%. I think I am OK for now. -- cpu idle time in /proc/stat wrong https://bugs.launchpad.net/bugs/30557 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
I confirm that this problem still exists in Feisty, including the latest 2.6.20-16 kernel. I'm running on a Compal DL71 with an Intel Pentium M 740 1.7 MHz CPU. Out of the box, the system was not doing any CPU throttling, always running at max CPU clock. I had previously run Breezy 5.10 which didn't exhibit any of these symptoms. Some Googling later, I learned to remove powernowd and how to use the cpufreq-info and cpufreq-set tools. With the ondemand governor, the system didn't throttle at all. With the conservative governor, it did throttle propertly, however KDE's power management tool (package: kde- guidance-powermanagemet) kept crashing because it doesn't know about the conservative governor. Long story short, I recompiled the kernel, configuring it for single CPU (no SMP) and the Pentium M cpu, and CPU throttling with the ondemand governor now works well. The following articles were helpful with the kernel recompile: https://help.ubuntu.com/community/Kernel/Compile https://help.ubuntu.com/community/Suspend2Kernel https://help.ubuntu.com/community/CustomRestrictedModules -- cpu idle time in /proc/stat wrong https://bugs.launchpad.net/bugs/30557 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 30557] Re: cpu idle time in /proc/stat wrong
this bug is still present on feisty herd2 on a sony vaio fs11m (centrimo 1.6GHz) kernel: 2.6.20-5-generic changing max_cstate as follows, resolve the issue: echo 1 /sys/module/processor/parameters/max_cstate On 10/30/06, hardyn [EMAIL PROTECTED] wrote: i am still having the problem of high CPU usage while idle, movie playback choppy etc. The maxcstate patch does take care of the problem. it appears that some effort has be taken to fix this, although i doesn't work with my configuration. asus z70va notebook pent. m. w/ fglrx driver. is this an issue that is still being looked into, or could something else in my configuration still be causing this problem? thanks Arlen -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
i am still having the problem of high CPU usage while idle, movie playback choppy etc. The maxcstate patch does take care of the problem. it appears that some effort has be taken to fix this, although i doesn't work with my configuration. asus z70va notebook pent. m. w/ fglrx driver. is this an issue that is still being looked into, or could something else in my configuration still be causing this problem? thanks Arlen -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
This probably does not belong here, but just to let you know: With latest update of the 686 kernel (2.6.15-26.47), restricted modules (2.6.15.11-4) and proprietary ATI fglrx driver (7.0.0-8.25.18+2.6.15.11-4), I now have hardware 3D with the 686 kernel. Problem seems to be gone. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
I confirm anonym's problems. I have an Acer aspire 1692WLmi, Pentium M740 with ATI X700 graphics. With the proprietary fglrx driver (version 8.25.18), hardware 3D is unavailable with -686 kernel (version 2.6.15-26.46) but works with -386 kernel. This can be verified by running glxinfo and checking the direct rendering: line. However, I suspect this may be a different bug, and possibly not with the kernel but with the fglrx driver or the restricted kernel module it needs. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
how exactly you lowered your graphics, I don't have any fancy effects either. but kernel is in C2 for 99.9% time -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Fixed my problem with slow graphics (Dell D810) - I had the correct binary driver installed for my kernel, but for some reason depmod -a was never run and the module wasn't loading. After fixing that everything seems ok now. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
** Changed in: linux-source-2.6.15 (Ubuntu) Status: Fix Committed = Fix Released -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
thanks Brian, looks like my kernel headers and image are updated (not sure about restricted modules, is that relevant?). I am attaching little info from my laptop (DELL 600m Celeron 1.5Ghz). My ultimate problem of processor persistance in high C2 power state remains. With 2.6.12 kernel I have frequent C3 and C4 states, with current 2.6.15-26.46 - very low. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
how do you guys apply these fixes? my adept/synaptic managers last time downloaded updates 24 hours ago and problem is still there. is there any way to see if this patch is implemented? or download it manually? is there any guide how to handle this bug fixing beyond running usual adept fetch updates? -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: [Bug 30557] Re: cpu idle time in /proc/stat wrong
I think you can check that you are using the new kernel this way: $ cat /proc/version Linux version 2.6.15-26-686 ([EMAIL PROTECTED]) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 SMP PREEMPT Thu Aug 3 03:13:28 UTC 2006 You may need to edit /boot/grub/menu.lst (CAREFULLY) or use the grub boot menu to switch to the new kernel. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: [Bug 30557] Re: cpu idle time in /proc/stat wrong
On Fri, 2006-08-04 at 13:35 +, João Manuel Rodrigues wrote: Should the bug now be marked Fix released? According to the changelog on the latest (2.6.15-26.46) dapper kernel: http://changelogs.ubuntu.com/changel...6.46/changelog It seems to be out now. Seems to work fine for me now. Dell XPS Gen2. Though I haven't compared it to -386 so I can't say for sure. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Should the bug now be marked Fix released? According to the changelog on the latest (2.6.15-26.46) dapper kernel: http://changelogs.ubuntu.com/changel...6.46/changelog It seems to be out now. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
I'm now running linux-image-2.6.15-26-686, version 2.6.15-26.46 on a Pentium M 740 1.73MHz (Acer Aspire 1692WLMi). So far, it seems fine: Without changing max_cstate, CPU rapidly throtles down to 800MHz and, when idle, CPU usage settles around 5--6%. Starting new apps, such as opening a firefox window, does not feel sluggish like it used to. Here is a sample of data taken some 19 minutes after booting, laptop connected to AC power, with Wi-Fi on and a USB mouse plugged in: $ cat /sys/module/processor/parameters/max_cstate 8 $ top top - 18:56:55 up 14 min, 3 users, load average: 0.08, 0.33, 0.27 Tasks: 103 total, 1 running, 102 sleeping, 0 stopped, 0 zombie Cpu(s): 5.3% us, 0.0% sy, 0.0% ni, 94.7% id, 0.0% wa, 0.0% hi, 0.0% si ... $ cat /proc/acpi/processor/CPU*/power active state:C2 max_cstate: C8 bus master activity: 04004002 states: C1: type[C1] promotion[C2] demotion[--] latency[000] usage[0010] *C2: type[C2] promotion[C3] demotion[C1] latency[001] usage[00356747] C3: type[C3] promotion[C4] demotion[C2] latency[085] usage[00053269] C4: type[C3] promotion[--] demotion[C3] latency[185] usage[00065042] Looks like this one is fixed. Thanks. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Dell Latitude D810 here. This problem seems dramatically lessened but not altogether gone. Dragging windows and other video-intensive actions are marginally slower than with the -386 kernel. Also my screensavers now run at about 10% their regular speed. (ati binary driver) Yes, it's like watching a slideshow now. I've been following this thread/problem for quite awhile, and hoped that this kernel update would solve all the problems. Looks like it's FAR better than it was, but things still aren't 'normal' vs. the -386 kernel. I'd stick with the -386 kernel except that vmware is almost unusable with it; the -686 kernel is considerably faster. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: [Bug 30557] Re: cpu idle time in /proc/stat wrong
Dell Inspiron 6000. Problem solved. @anonym - if you've got the time and the patience, check to see whether upstream kernels fix your problem. git-bisect can help you narrow it down to which change fixed the bug. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Problem resolved with HP/Compaq nc6230 -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Thanks. Patches applied for next dapper update. ** Changed in: linux-source-2.6.15 (Ubuntu) Assignee: (unassigned) = Ben Collins Status: Confirmed = Fix Committed -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: [Bug 30557] Re: cpu idle time in /proc/stat wrong
Is this supposed to be fixed for 2.6.15-26-686? Because it still isn't fixed for me (top reports ~80% CPU usage with max_cstate set to 3) On Wed, 2006-07-19 at 16:06 +, Ben Collins wrote: Thanks. Patches applied for next dapper update. ** Changed in: linux-source-2.6.15 (Ubuntu) Assignee: (unassigned) = Ben Collins Status: Confirmed = Fix Committed -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: [Bug 30557] Re: [Bug 30557] Re: cpu idle time in /proc/stat wrong
On Thu, 2006-07-20 at 02:56 +, sohail wrote: Is this supposed to be fixed for 2.6.15-26-686? Because it still isn't fixed for me (top reports ~80% CPU usage with max_cstate set to 3) Fix committed means it's in our source repo. When it's marked Fix released, then it will mean it's uploaded and available. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: [Bug 30557] Re: [Bug 30557] Re: [Bug 30557] Re: cpu idle time in /proc/stat wrong
Ah. I picked up a kernel update last night that was the version below so I thought it might have been that. Thanks! On Thu, 2006-07-20 at 03:25 +, Ben Collins wrote: On Thu, 2006-07-20 at 02:56 +, sohail wrote: Is this supposed to be fixed for 2.6.15-26-686? Because it still isn't fixed for me (top reports ~80% CPU usage with max_cstate set to 3) Fix committed means it's in our source repo. When it's marked Fix released, then it will mean it's uploaded and available. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
The problem and the fix are described in these notes to LKML: http://lkml.org/lkml/2005/12/8/304 There are some further changes upstream to deal with bugs in the first set of patches. Right now I'm running the Ubuntu 2.6.15-26 code with this set of patches, and things look good: 5a07a30c3cc4dc438494d6416ffa74008a2194b3 6eb0a0fd059598ee0d49c6283ce25cccd743e9fc d25bf7e5fe73b5b6d2246ab0be08ae35d718456b 76b461c21468f41837283b7888d55f1c0671f719 -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Both problems are reproducible in kernel.org 2.6.15.7. Both appear to be fixed in 2.6.16. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Neither bug, the /proc/stat issue or the lousy X performance, is reproducible in 2.6.17.5. I'm going to try to figure out which kernel rev resolved the issue(s). -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Well, my problem goes away if I change my config from CONFIG_HZ_250 to CONFIG_HZ_1000. The change from 1000 to 250 was done in 2.5.15-24, which corresponds nicely to when I started to see problems with sluggish performance. * i386/amd64: Change HZ=1000 to HZ=250. The high frequency was causing high power consumption on some laptops, and also some latency under certain I/O loads. Even when I rebuild with CONFIG_HZ_1000, the idle time in /proc/stat continues to go up very slowly. Seems more and more likely we're talking about different problems. Nonetheless, I'd much prefer it if the ubuntu 686 kernel didn't hose X performance on my laptop. I doubt regressing the HZ=250 change would count as progress, but if anyone has suggestions for further research into why HZ=250 causes problems on my machine, I'd be interested in hearing them. I'd also be interested whether anybody else reporting issues sees a change when HZ is set to 1000 instead of 250. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
I've put together a test program that demonstrates the performance degradation introduced by this bug. The attached tar ball contains information about the test program and oprofile runs demonstrating the differences in performance with max_cstate=1 and max_cstate=8. I believe Ubuntu defect 50153 is a duplicate of 30557 because the symptoms and workarounds are the same. However, 50153 is not reproducible in 2.6.15-23. I first noticed the problem in 2.6.15-25. This is in conflict with what some other reporters have experienced, with 30557 first appearing in 2.6.15-15. The attached tar file contains the oprofile reports, the test program, and a more detailed description of my tests. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
This problem still occurs if I use the stock kernel.org 2.6.15 source (or the Debian source) with the Ubuntu 686 config file. I see a couple of possibilities: 1) There are two separate bugs being discussed here. This would explain several discrepancies in the bug reports, particularly why some people see serious performance degradation, and others only reduced battery life. 2) These are the same bug with different environments producing different symptoms. Given that the bug I'm seeing (which is probably the same as the one Steve Bourg is seeing) can be reproduced using the stock kernel source code, should this issue be pushed upstream? -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Last kernel 686-26 doesn't seem to solve the problem for me. At the moment I use 386 kernel because I think that set max_cstate=1 decreases battery life according to this web: http://www.thinkwiki.org/wiki/Talk:Problem_with_high_pitch_noises -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
Confirming the bug with latest Dapper and HP nx6110. Willing to assist with debugging as I am a DD and am willing to follow instructions to fix this. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
** Attachment added: dmesg output - HP nx6110 http://librarian.launchpad.net/3270776/dmesg.output -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
This problem occurs also on Celeron-M processors (like mine 360J in HP nx6110). Performance in Dapper is severely degraded when compared to Breezy. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
I too would like to emphasize the importance of this issue. Performance is significantly degraded on my HP nc6230 with 686 kernel. With such a variety of systems being impacted, I hope this issue will be be changed to a higher level of importance. -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
** Bug 51237 has been marked a duplicate of this bug -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
** Bug 50024 has been marked a duplicate of this bug -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 30557] Re: cpu idle time in /proc/stat wrong
I'd like to emphasize again that this bug has severe implications on some systems. I just found out that bug #50341 is actually caused by this bug. To summarize it: As long as I don't work around with max_cstate=1, I can't even scroll smoothly in an xterm (not speaking about something like firefox) and my keyboard repeat rate goes down to about 1/6 of the value with max_cstate=1. ** Bug 50341 has been marked a duplicate of this bug -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
