On 07/18/10 12:41, Kostik Belousov wrote: > On Sun, Jul 18, 2010 at 12:21:00PM -0700, Doug Barton wrote: >> On 07/18/10 03:30, Kostik Belousov wrote: >>> On Sun, Jul 18, 2010 at 01:14:41AM -0700, Doug Barton wrote: >>>> On Sat, 17 Jul 2010, Kostik Belousov wrote: >>>> >>>>> Run top in the mode where all system threads are shown separately >>>>> (e.g. top -HS seems to do it), then watch what thread eats the processor. >>>> >>>> And the winner is! >>>> >>>> 11 root -32 - 0K 168K WAIT 0 0:28 18.02% {swi4: >>>> clock} >>>> 11 root 21 -64 - 0K 168K WAIT 0 1:17 18.90% intr >>>> >>>> The first is with -H, the second without. >>> >>> Most likely it is some callout handling. Just in case, do you have >>> console screensaver active ? >> >> I assume you mean "saver=yes" in rc.conf, and the answer is no, I am not >> using that. Usually I run xscreensaver, but at the time this happened I >> was not. I do have DPMS enabled in my X config though. >> >> Any suggestions on how to dig deeper on this? Are there any settings I >> can twiddle to try and mitigate it? > When intr time starts accumulating again, try to do > "procstat -kk <intr process pid>" and correlate the clock thread tid > with the backtrace. Might be, it helps to guess what callouts are eating > the CPU.
Ok, file attached. -- Improve the effectiveness of your Internet presence with a domain name makeover! http://SupersetSolutions.com/ Computers are useless. They can only give you answers. -- Pablo Picasso
PID TID COMM TDNAME KSTACK 11 100004 intr swi1: netisr 0 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100005 intr swi4: clock mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100006 intr swi4: clock mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100007 intr swi3: vm 11 100014 intr swi6: Giant task mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100015 intr swi6: task queue mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100020 intr swi2: cambio mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100021 intr swi5: + 11 100022 intr irq9: acpi0 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100023 intr irq16: 11 100024 intr irq256: hdac0 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100026 intr irq17: wpi0 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100027 intr irq20: hpet0 uhc mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100032 intr irq21: uhci1 11 100037 intr irq22: uhci2 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100042 intr irq23: uhci3 11 100052 intr irq14: ata0 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100053 intr irq15: ata1 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100055 intr irq1: atkbd0 mi_switch+0x200 ithread_loop+0x1da fork_exit+0xb8 fork_trampoline+0x8 11 100056 intr irq12: psm0 11 100057 intr swi0: uart
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