Re: netbsd-4 vs -current web server performance

[Jeff Rizzo <riz%NetBSD.org@localhost>]

Jeff Rizzo wrote:
> Looking at both machines, the one running 4 was at its normal load -
> between 4 and 5 - but the machine running -current had a load of about
> 12, and many of the httpd processes were showing as 'parked' in top, and
> there were no idle cpus. Restarting apache on the affected machine seems
> to have brought things back to normal - both machines have a load just
> under 3, and all CPUs (8 per box) have ~80% idle.
>   


By way of following up to myself, I just had to pull the -current
machine out of the rotation for unrelated reasons (forgot to install an
important package on it), and the load dropped away *except* for three
httpd processes:

  PID USERNAME PRI NICE   SIZE   RES STATE      TIME   WCPU    CPU COMMAND
 4742 www       42    0    17M  314M parked/2 233:14 99.02% 99.02% httpd
 3265 www       39    0    17M  266M parked/0 164:34 99.02% 99.02% httpd
 8844 www       40    0    17M  298M parked/0 158:27 99.02% 99.02% httpd


So, clearly, something is causing these processes to get wedged - and
when enough get wedged, the machine stops being useful.

Any ideas?

+j