On Wed, Aug 12, 2009 at 02:07:58AM +0200, Bernie Innocenti wrote: > Over the past months, CPU usage on Sunjammer has been increasing > gradually to the point that it made the system unusable during prime > time (east coast daytime hours): > > > http://sunjammer.sugarlabs.org/munin/sugarlabs.org/sunjammer.sugarlabs.org-cpu.html > > > Apache is getting impressive peaks of 500 requests per minute every day: > > > http://sunjammer.sugarlabs.org/munin/sugarlabs.org/sunjammer.sugarlabs.org-apache_accesses.html > > > The logs oddly did not match these stats. Then I realized that ASLO > wasn't actually logging into the access-all.log. Aha! > > Ok, then ASLO is actually responsible for all this activity. What next? > We already have memcached and APC hard at work: > > > http://sunjammer.sugarlabs.org/munin/sugarlabs.org/sunjammer.sugarlabs.org-memcached_bytes.html > > http://sunjammer.sugarlabs.org/munin/sugarlabs.org/sunjammer.sugarlabs.org-memcached_rates.html > https://sunjammer.sugarlabs.org/apc.php > > Caches appear to be large enough, so there's not much we can do to > improve. I tweaked a few things of minor relevance in php.ini, just in > case. > > Looking around I noticed that the production aslo had debug and > development mode enabled, and the query cache disabled.
My bad, I enabled development mode while switching to new AMO code base(I got problems with compressed css/js stuff) and completely forgot about it, I'll recheck it. > Tomorrow we > shall see how much changing these helped. There may also be some MySQL > tuning to be investigated. > > Anyway, the FSF is soon going to relocate us to a higher profile box > with 4 cores (we currently have only 1 assigned to our VM) and more > memory. This should really breath some fresh new air into Sunjammer. > > If Sugar adoption keeps improving at this rate, at some point we'll have > to split ASLO to an independent box. Or two :-) It's good to know > we're using the same software that Mozilla has already scaled up to > several millions users! > > -- > // Bernie Innocenti - http://codewiz.org/ > \X/ Sugar Labs - http://sugarlabs.org/ > > > _______________________________________________ > Systems mailing list > [email protected] > http://lists.sugarlabs.org/listinfo/systems > -- Aleksey _______________________________________________ IAEP -- It's An Education Project (not a laptop project!) [email protected] http://lists.sugarlabs.org/listinfo/iaep
