Mailinglist Archive: opensuse-bugs (4068 mails)

< Previous Next >
[Bug 714455] New: Opensuse 11.4 64b Kernel 2.6.37.6-0.7 bug : kworker thread at 90%
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 26 Aug 2011 15:13:13 +0000
  • Message-id: <bug-714455-21960@http.bugzilla.novell.com/>

https://bugzilla.novell.com/show_bug.cgi?id=714455

https://bugzilla.novell.com/show_bug.cgi?id=714455#c0


Summary: Opensuse 11.4 64b Kernel 2.6.37.6-0.7 bug : kworker
thread at 90%
Classification: openSUSE
Product: openSUSE 11.4
Version: Final
Platform: HP
OS/Version: openSUSE 11.4
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Kernel
AssignedTo: kernel-maintainers@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: guy.zelck@xxxxxxxxxx
QAContact: qa@xxxxxxx
Found By: ---
Blocker: ---


User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20100101
Firefox/5.0

Hi all,

There is a known kernel bug which eats almost 1 cpu, so pretty anoying (see
https://bugzilla.kernel.org/show_bug.cgi?id=29722).
It quickly appears after working normaly. A workaround is to use kernel
parameter pcie_ports=compat.

BUT : This does not help when you resume your PC from a suspend.

A kernel has been patched (from the kernel bug site if I remember correctly,
just google) :

"A patch referencing this bug report has been merged in v2.6.38-8876-g036a982:

commit 8b8bae901ce23addbdcdb54fa1696fb2d049feb5
Author: Rafael J. Wysocki <rjw@xxxxxxx>
Date: Sat Mar 5 13:21:51 2011 +0100

PCI/ACPI: Report ASPM support to BIOS if not disabled from command line"

The bug is known since Mar 5 2011 but Opensuse stalls in releasing a patched
kernel for 11.4.

Reproducible: Always

Steps to Reproduce:
Boot and wait 1 hour at the most. I did a fresh install on my new hardware (HP
8540w 64bit) and noticed this right away.
Actual Results:
You loose 1 cpu +/- completely (>90% cpu by kworker/0:0 constantly).


guylx:/var/log # ps -ef|egrep -i 'uid|kworker'
UID PID PPID C STIME TTY TIME CMD
root 11 2 68 15:05 ? 01:24:18 [kworker/0:1]
root 20503 2 0 16:31 ? 00:00:00 [kworker/u:1]
root 20610 2 62 16:34 ? 00:21:38 [kworker/0:2]
root 20826 2 0 16:38 ? 00:00:00 [kworker/u:2]
root 20984 2 1 16:42 ? 00:00:23 [kworker/2:0]
root 21572 2 0 16:51 ? 00:00:00 [kworker/1:1]
root 21692 2 0 16:53 ? 00:00:00 [kworker/3:1]
root 21863 2 94 16:56 ? 00:11:19 [kworker/0:0]
root 21941 2 0 16:58 ? 00:00:00 [kworker/u:0]
root 21977 2 0 16:59 ? 00:00:00 [kworker/2:1]
root 21983 2 0 16:59 ? 00:00:00 [kworker/3:0]
root 22248 2 0 17:03 ? 00:00:00 [kworker/1:0]
root 22289 2 0 17:04 ? 00:00:00 [kworker/3:2]
root 22312 2 0 17:04 ? 00:00:00 [kworker/u:3]
root 22329 2 0 17:05 ? 00:00:00 [kworker/2:2]

--
Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

< Previous Next >
This Thread
  • No further messages