On Tue, 14 Apr 2009 15:04:11 +0200, Oleg V. Nauman <[email protected]>
wrote:
Have experienced today strange issue with my fresh RELENG_7 ( sources
from yesterday April 13, userland and kernel in sync ) - sometimes some
processes stop running without any visible reason. Have seen it twice
today during KDE compilation - make process just waiting for something
while nothing else compiles or some other way prevents this process from
running ( no SIGSTOP performed, no Ctrl-S performed on console). Well it
possible related to ( or triggered by ) new ports compilation feature
for SMP machines ( most of KDE port marked as MAKE_JOBS_SAFE=yes ) but
anyway this stuck process behavior is strange. kill -SIGCONT not helps,
but it killable ( Ctrl-C helps at least )
Well some info related to this process:
procstat -t 63472 output:
PID TID COMM TDNAME CPU PRI STATE WCHAN
63472 100059 make - 1 92 sleep wait
procstat -kk 63472 output:
PID TID COMM TDNAME KSTACK
63472 100059 make - mi_switch+0x2c8
sleepq_switch+0xd9 sleepq_catch_signals+0x239 sleepq_wait_sig+0x14
_sleep+0x307 kern_wait+0xa36 wait4+0x3b syscall+0x2b3
Xint0x80_syscall+0x20
Some related sysctls output:
kern.smp.cpus: 2
kern.smp.disabled: 0
kern.smp.active: 1
uname -msr output:
FreeBSD 7.2-PRERELEASE i386
It sounds like
http://www.mail-archive.com/[email protected]/msg102628.html .
There are some tips in that mailthread about debugging it.
Ronald.
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