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Re: netbsd-4 vs -current web server performance
Thor Lancelot Simon wrote:
> On Tue, Sep 02, 2008 at 02:52:33PM -0700, Jeff Rizzo wrote:
>> 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
> Parked *and* 100% of a CPU?
> That seems just wrong.
I would tend to agree - but I don't know all that much about the new
states. This issue is fairly reproducible (within a few hours) - and
also seems to go away (for a few hours) after restarting apache. I have
a couple weeks to get this fixed, since even at it's worst it's not too
bad, and in any event I have multiple webservers.
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