Created an attachment (id=415179) tasklet debug patch (In reply to comment #54) > ** novelty ** The first time for the ksoftirqd 100% cpu usage problem several > stack dumps were taken (by Alt-PrnScr-L) to let you see in which execution > state the CPU was. So just have a look at this.
The 2.6.37 traces are useless. The 2.6.34.7 ones are helpful though. Also /proc/softirq clearly shows that some kind of shit schedules a tasklet way too often. I'm attaching a patch to track that down. Also I'm building a kernel to test and it will appear at: http://labs.suse.cz/jslaby/bug-465039 Watch for tasklet_action in the logs when this happens. Maybe there will be false positives. Then I'll increase the limit. Let's see. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/183461 Title: ksoftirqd/1 using 50% CPU or above -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
