) and
cross-posted to /r/apache as well, but unfortunately I've still not
received any feedback other than the one request here for clarification and
a couple of suggestions on reddit that I'd already covered in the post.
It's possible no one has any suggestions for me regarding this issue (it is
a somewhat complex application stack that could be requiring configuration
and/or tuning in multiple places, for example), but given how severe of a
problem this is for my production sites, I wanted to bump it once in hopes
of possibly getting at least some pointers of things to consider that I may
not have already, especially with respect to diagnostics I could perform on
the live web servers beyond just server-status and the collectd apache
plugin (which is basically the same thing), for example.
On Thu, Nov 12, 2015 at 8:02 AM, Justin Lloyd <jlloyd.wiki(a)gmail.com> wrote:
Marcin,
It's the biggest and most heavily trafficked of our wikis because its the
English-language version of the wiki. We also have German, French, and
Spanish, but the English-speaking community is by far the largest and most
active. There are some tiny configuration differences between the wikis
(e.g. the value of $wgJobRunRate, the specific extensions loaded) but
nothing very significant I don't believe.
I should also add that all four of these wikis (we have a 5th, for 7
total, not 6 as I'd originally said) also use Semantic MediaWiki
extensively. I believe the other three wikis would run into the same
problem if they had same amount of traffic as the English one. However,
since they all are vhosts within the same Apache instances, the English
one's problems affect all of them.
Justin
On Thu, Nov 12, 2015 at 1:42 AM, Marcin Cieslak <saper(a)saper.info> wrote:
On 2015-11-12, Justin Lloyd
<jlloyd.wiki(a)gmail.com> wrote:
* Six wikis are configured as Vhosts in Apache,
load balanced by a
separate
set of front-end servers, where two of the wikis
are for private
internal
use and the other four are public, though the
traffic to one of the
public
wikis dwarfs the rest and it's the wiki
giving me problems.
(...)
I'm mainly looking right now for how to
troubleshoot the stuck
processes,
but any advice regarding this architecture is
also welcome, as I feel it
could use some improvement but I'm not sure how just yet.
The question that immediately comes to my mind before I start digging
any further - how is the wiki making problems special? Is it just getting
most of the traffic (it is the "most interesting" one) or is its
configuration slightly different?
Marcin Cieślak
https://www.mediawiki.org/wiki/User:Saper
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