[Catalyst] Catalyst 5.9007 / memcache /high cpu

[Vladimir Timofeev]

2012/2/17 Todd Benge <todd.benge at trackvia.com>:
> Hi,
>
> We recently updated our web servers to Catalyst 5.9007 with Perl 5.12.
>
> After the upgrade, we've consistently seen very high cpu on the machines >
> 90%.  After much looking, it appears that the apache threads are stuck in
> Cache::Memcached disconnecting.
>
> We use Catalyst:Plugin::Session::Store::Cache::Memcached and
> Plugin::Session.  We've tried Cache::Memcached::Fast but see random
> segmentation faults.
>
> So, I'm looking to see if anyone else has seen this problem or may have any
> suggestions?

I've seen similar problems when the connection (to memcached in this
case) was set up before fork. After fork, you can't reuse same socket.
For example: DBIC automatically handle it, by compare saved (on
connect time) pid with current pid, and reconnect when they not equal.

>
> One option we're considering is moving away from the Memcached session store
> and using DBIC instead?  Any recommendations?
>
> I appreciate any help.
>
> Thanks,
>
> Todd
>
>
>
>
>
> _______________________________________________
> List: Catalyst at lists.scsys.co.uk
> Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
> Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/
> Dev site: http://dev.catalyst.perl.org/
>



-- 
Vladimir Timofeev <vovkasm at gmail.com>