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Date: Fri, 6 May 2005 16:34:32 +0200 (CEST)
From: "Christophe Yayon" <lists@nbux.com>
To: freebsd-stable@freebsd.org
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Subject: pthreads and nagios issue
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X-List-Received-Date: Fri, 06 May 2005 14:34:37 -0000

 Hi all,

i am upgrading our nagios 1.2 (on freebsd 5.3-release) to nagios 2.0
(currently last cvs after 2.0b3) on Freebsd-5.4RC3 and i saw a very
strange thing.

After few hours, nagios main process (nagios -d ...) use lot of cpu time
and when i do a truss on the pid, i have a "kse_release" loop message.

# top
last pid: 75729;  load averages:  1.81,  2.08,  2.03
63 processes:  2 running, 61 sleeping
CPU states: 12.5% user,  0.0% nice, 16.0% system,  0.0% interrupt, 71.5% idle
Mem: 36M Active, 1639M Inact, 219M Wired, 68M Cache, 112M Buf, 44M Free
Swap: 5000M Total, 52K Used, 5000M Free

PID USERNAME PRI NICE   SIZE    RES STATE  C   TIME   WCPU    CPU COMMAND
40435 nagios   112    0  4688K  3544K CPU0   0 569:46 93.99% 93.99% nagios
[...]


# truss -p 40435
kse_release(0xbfbf9b70)                          ERR#22 "Invalid argument"
kse_release(0xbfbf9b70)                          ERR#22 "Invalid argument"
kse_release(0xbfbf9b70)                          ERR#22 "Invalid argument"
[...]

I know there is a pthread_acquire() issue with Nagios and  FreeBSD
threads, but is there any patch against this ?

Thanks in advance...