On Fri, Jan 28, 2005 at 05:48:11PM +0100, Michael Gernoth wrote: > Hi, > > we have about 70 P4 uniprocessor machines (some with Hyperthreading > capable CPUs) running linux 2.4.29, which are woken up on the weekdays > by sending a WOL packet to them. The machines all have a E100 nic with > WOL enabled in the bios. The E100 driver is compiled into the kernel > and not loaded as a module. > > If the machine which should be woken up is already running (because > someone switched it on by hand), the WOL packet causes keventd to go > mad and "use" 100% CPU: > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 2 root 15 0 0 0 0 R 99.9 0.0 140:50.94 keventd
Probably a task event is rescheduling itself repeatedly? e100 does not seem to schedule_task() events directly, so I wonder what is going on. Can you boot a machine with profile=2, then send the WOL packet causing keventd to go mad and run: readprofile | sort -nr +2 | head -20 After a few minutes. Ganesh, Scott, Jeff, any ideas? > This can be reproduced on any of the 70 machines by simply sending a WOL > packet to it, when it's already running... No entry is made in the > kernel log. > > The dmesg of an affected machine can be found at: > http://wwwcip.informatik.uni-erlangen.de/~simigern/cip-dmesg > Our kernel-config is at: > http://wwwcip.informatik.uni-erlangen.de/~simigern/cip-generic-config > lspci -vvv is at: > http://wwwcip.informatik.uni-erlangen.de/~simigern/cip-lspci > > We are using a kernel.org linux 2.4.29 kernel patched with the current > autofs patch and ACL support. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
