[SAC] Temp disable of some sites on Projects

[Alex Mandel]

Update,

Thanks to Grant from OSM (Firefishy) I got some performance tuning tips
today.

echo 4096 | sudo tee /sys/block/vda/queue/read_ahead_kb ; echo noop |
sudo tee /sys/block/vda/queue/scheduler

Had OSUOSL double the ram (since Old backup VM is offline).

And played some more with Apache conf:
BufferedLogs (uses ram to queue batches of log writing)
Maxclients is now up to 250

Installed php-apc a caching tool for php.

Does anyone recall which if any sites had memory leak issues? And is
that why MaxRequestPerChild is low?

Performance seems decent now, and I'll start turning on sites that are
still off one by one later, checking after each for performance.

FYI, batteries for the raid cards are in the mail.

Thanks,
Alex

On 04/04/2014 01:38 AM, Alex Mandel wrote:
> We're still having I/O issues. Temp hack by Hamish and me to get some
> stuff up:
> 
> The following sites are currently disabled:
> projects:/etc/apache2/sites-enabled# a2dissite tilecache
> projects:/etc/apache2/sites-enabled# a2dissite
> community-review.foss4g.org.conf
> projects:/etc/apache2/sites-enabled# a2dissite
> community-review.foss4g.org.conf
> projects:/etc/apache2/sites-enabled# a2dissite grasswiki.osgeo.org
> projects:/etc/apache2/sites-enabled# a2dissite grassold.osgeo.org
> 
> Apache is going to be throttled to a lower number of processes 60 ( I
> think it was 200)
> 
> Mapserver sphinx-build is being changed to once per day (we should look
> to building it else-where and copying it over).
> 
> Selective log filtering is an option too, but not done yet.
> http://2bits.com/drupal-performance/reducing-size-and-io-load-apaches-web-server-log-files.html
> 
> Next steps are to get osuosl to increase ram allocation, and verify VM
> cache settings are optimum. After ram change we'd like projects to start
> using memcache or apache inmemory caching where useful.
> 
> Long term (next few days) OSUOSL says we need replacement raid card
> batteries. This could be affecting performance.
> http://www.amazon.com/Dell-U8735-NU209-Battery-PowerEdge/dp/B0045ZNJJU
> It's going to run ~$100 for 2 (both servers need it), depending on
> shipping. Faster shipping encouraged. Can someone help Daniel get this
> done quickly or offer to wait for reimbursement?
> 
> 
> Thanks,
> Alex
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