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@forge.provo.novell.com ReportedBy: guy.zelck@telenet.be QAContact: qa@suse.de 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@sisk.pl> 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.