Date: Wed, 15 Apr 2009 11:14:38 +0200 From: "Ronald Klop" <ronald-freebsd8@klop.yi.org> To: "Oleg V. Nauman" <oleg@opentransfer.com>, freebsd-stable@freebsd.org Subject: Re: 7.2-PRERELEASE: make process waiting indefinitely Message-ID: <op.use7yoh38527sy@82-170-177-25.ip.telfort.nl> In-Reply-To: <20090414160411.042472seockg0css@webmail.opentransfer.com> References: <20090414160411.042472seockg0css@webmail.opentransfer.com>
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On Tue, 14 Apr 2009 15:04:11 +0200, Oleg V. Nauman <oleg@opentransfer.com> 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/freebsd-stable@freebsd.org/msg102628.html . There are some tips in that mailthread about debugging it. Ronald.
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