[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-28 Thread Tim Gardner
*** This bug is a duplicate of bug 1637520 *** https://bugs.launchpad.net/bugs/1637520 ** This bug has been marked a duplicate of bug 1637520 Yakkety update to v4.8.5 stable release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-18 Thread Joseph Salisbury
I built a test kernel with the proposed patch from upstream. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/upstream/ Can you test this kernel and see if it resolves this bug? -- You received this bug notification because you are a member of Ubuntu

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-13 Thread Omer Akram
That's correct, that dump_buggy is without stress running. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-13 Thread Joseph Salisbury
>From Upstream: "> Here is the dump before stress is started: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627108/+attachment/4760437/+files/dump_nonbuggy This one is ok. The dump indicates Sched Debug Version: v0.11, 4.8.0-11-generic #12~lp1627108Commit3d30544Reverted so this is

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-13 Thread Omer Akram
** Attachment added: "dump_buggy" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627108/+attachment/4760436/+files/dump_buggy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title:

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-13 Thread Omer Akram
I have attached two dumps. One with the buggy kernel and the other with the kernel that does not show the lag. ** Attachment added: "dump_nonbuggy" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627108/+attachment/4760437/+files/dump_nonbuggy -- You received this bug notification

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-13 Thread Joseph Salisbury
Update and request from upstream: "I have looked at the dump and there is something very odd for system.slice task group where the display manager is running. system.slice->tg_load_avg is around 381697 but tg_load_avg is normally equal to Sum of system.slice[cpu]->tg_load_avg_contrib whereas Sum

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-12 Thread Omer Akram
I tested the kernel tip from your debs and the issue is very much alive. Here is the requested dump: http://paste.ubuntu.com/23312351/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title:

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-11 Thread Joseph Salisbury
Upstream also requested testing of the following repo: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git I built a test kernel with this tree. It can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/upstream/ Can you test this kernel and see if it exhibits the bug or

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-11 Thread Joseph Salisbury
The patch author requested that we provide a /proc/sched_debug dump while the issue is happening. Can you collect that data? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Omer Akram
As notified on on IRC, that is a good kernel. The issue is easy to reproduce on an X1 Carbon just run `stress -c 4` and within a few seconds mouse starts to lag and everything becomes slow. ** Description changed: My X1Carbon becomes quite laggy, the cursor hangs for a few seconds and then

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Joseph Salisbury
I built a Yakkety test kernel with a revert of commit 3d30544f02120b884bba2a9466c87dba980e3be5. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/ Can you test that kernel and report back if it has the bug or not? Note with this kernel, you need to install

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Joseph Salisbury
The bisect reported this as the first bad commit: commit 3d30544f02120b884bba2a9466c87dba980e3be5 Author: Peter Zijlstra Date: Tue Jun 21 14:27:50 2016 +0200 sched/fair: Apply more PELT fixes -- You received this bug notification because you are a member of Ubuntu

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 7dc603c9028ea5d4354e0e317e8481df99b06d7e The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/7dc603c9028ea5d4354e0e317e8481df99b06d7e Can you test that kernel and report back if it has the bug or not? I

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Omer Akram
As reported on IRC, that's a bad kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage notifications about this bug

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 3d30544f02120b884bba2a9466c87dba980e3be5 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/3d30544f02120b884bba2a9466c87dba980e3be5 Can you test that kernel and report back if it has the bug or not? I

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Martin Pitt
FTR, I tested #29 which works for Omer, but not for me, so bug 1626436 is not a duplicate. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: ea86cb4b7621e1298a37197005bf0abcc86348d4 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/ea86cb4b7621e1298a37197005bf0abcc86348d4 Can you test that kernel and report back if it has the bug or not? I

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-07 Thread Omer Akram
Ok, the one is comment 28 is bad, while the one in #29 is Good. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Joseph Salisbury
If that kernel is also bad, then the next one is already ready and can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/3d89e5478bf550a50c99e93adf659369798263b0/ However, if it is good, I'll have to build the next kernel with a good result. -- You received this bug

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Joseph Salisbury
I pointed you to the wrong kernel in comment #26. The URL should have been: http://kernel.ubuntu.com/~jsalisbury/lp1627108/55e16d30bd99510900caec913c90f53bc2b35cba/ Can you test that kernel? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Omer Akram
Thanks, that's a bad kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage notifications about this bug go to:

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 55e16d30bd99510900caec913c90f53bc2b35cba The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/766fd5f6cdaf1d558afba19850493b2603c9625d Can you test that kernel and report back if it has the bug or not? I

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Omer Akram
That is a bad kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage notifications about this bug go to:

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 766fd5f6cdaf1d558afba19850493b2603c9625d The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/766fd5f6cdaf1d558afba19850493b2603c9625d Can you test that kernel and report back if it has the bug or not? I

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 3ebfd81f7fb3e81a754e37283b7f38c62244641a The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108/3ebfd81f7fb3e81a754e37283b7f38c62244641a Can you test that kernel and report back if it has the bug or not? I

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Omer Akram
That's a good kernel build. Seems there are multiple builds in there, so I tested 201610061038 which is newer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: c86ad14d305d2429c3da19462440bac50c183def The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108 Can you test that kernel and report back if it has the bug or not? I will build the next test kernel based on

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Omer Akram
Hi! That is a bad kernel, i.e. it contains the regression. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 0f657262d5f99ad86b9a63fb5dcd29036c2ed916 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108 Can you test that kernel and report back if it has the bug or not? I will build the next test kernel based on

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Omer Akram
To add the missing comment, I tried that last kernel last night and that is a good one as well. I notified Joseph on IRC. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-06 Thread Martin Pitt
I filed bug 1626436 which is similar; I wanted to try http://kernel.ubuntu.com/~jsalisbury/lp1627108 but that is empty? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-05 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 5048c2af078d5976895d521262a8802ea791f3b0 The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108 Can you test that kernel and report back if it has the bug or not? I will build the next test kernel based on

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-05 Thread Omer Akram
Ok, that is a good kernel. My test is `stress -c 4` and it works fine i.e. system performance does not degrade. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-05 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 52770c37db2c0ee5585dae2de3d19c8453f1e8dc The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108 Can you test that kernel and report back if it has the bug or not? I will build the next test kernel based on

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-05 Thread Omer Akram
Same results. This build is infected as well. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage notifications about this

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-05 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: 55392c4c06204c8149dc09cf474691f1cc3c The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108 Can you test that kernel and report back if it has the bug or not? I will build the next test kernel based on

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-05 Thread Omer Akram
Tested, the latest kernel build that you provided is bad as well. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-04 Thread Joseph Salisbury
I built the next test kernel, up to the following commit: f7816ad0f878dacd5f0120476f9b836ccf8699ea The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1627108 Can you test that kernel and report back if it has the bug or not? I will build the next test kernel based on

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-04 Thread Joseph Salisbury
Omer reports the first test kernel is bad on IRC. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage notifications about

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-04 Thread Joseph Salisbury
I started a kernel bisect between v4.7 final and v4.8-rc1. The kernel bisect will require testing of about 7-10 test kernels. I built the first test kernel, up to the following commit: 1c88e19b0f6a8471ee50d5062721ba30b8fd4ba9 The test kernel can be downloaded from:

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-04 Thread Omer Akram
I tried linux 4.8-rc1 and it does have the said regression. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-04 Thread Joseph Salisbury
Can you give the v4.8-rc1 kernel a try? It can be downloaded from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8 We can perform a kernel bisect, once we know the last good kernel and first bad one. ** Changed in: linux (Ubuntu Yakkety) Assignee: (unassigned) => Joseph Salisbury

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-03 Thread Omer Akram
So I tested linux 4.8 final and the regression still exists. On another note I also tested linux 4.7 and the issue does not exist there. ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu Yakkety) Status: Incomplete => Confirmed -- You received this bug notification

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-10-03 Thread Joseph Salisbury
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.8 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-09-24 Thread Omer Akram
Confirming, downgrading to 4.4 fixes the issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU usage tasks To manage notifications about

[Bug 1627108] Re: X1Carbon comes to a crawl during high CPU usage tasks

2016-09-23 Thread Brad Figg
** Tags added: kernel-4.8 ** Changed in: linux (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1627108 Title: X1Carbon comes to a crawl during high CPU