Upgrade back to 1.4.5 and look for the 'listen_disabled_num' value in the stats output. If the number is increasing, you're hitting maxconns.
If not, you're probably seeing packet loss, or have a firewall in the way that's maxing out. On Tue, 7 Sep 2010, the_fonz wrote: > Guys, > > We are seeing tons of these messages reported; > > Memcache::get(): Server 10.3.230.15 (tcp 11211) failed with: > Connection timed out (110) > > They are reported on all six of our webservers. Memcache is working > but lots of connections are timing out as reported with the above > messages. > > We are running memcached 1.2.5 with php-pecl-memcache-2.2.3 (we also > tried with memcache 1.4.5 but had the same errors). We have PHP 5.2.6 > running on x86 Hardware with Red Hat 5.5. > > We have six web servers all running Apache 2.2 on prefork mode. > Prefork MaxClients is set to 192. > > Our memcached config looks like this; > > PORT="11211" > USER="memcached" > MAXCONN="2048" > CACHESIZE="2048" > OPTIONS="" > > We are running memcache between webservers on a LAN, no Firewall or > iptables being used. > > Memcache is used to cache output of scripts most of the time. It could > be HTML or XML that is delivered to client. > > Our tcp values look like this; > > tcp_fin_timeout > 60 > tcp_max_orphans > 65536 > tcp_orphan_retries > 0 > tcp_keepalive_probes > 9 > tcp_keepalive_time > 7200 > > I am totally out of ideas, I can't see any dropped packets on the > network, I just don't know what else to check. > > Any ideas as I am pulling my hair out! > > Thanks > >
