Perhaps you're running out of connections? On Thu, Feb 26, 2009 at 3:01 PM, Chris Cameron <[email protected]> wrote:
> > During peak load, PHP sporadically complains that it is unable to > connect to my memcache server. I've taken a close look, and everything > appears to be functioning fine, but the connection errors persist. > > The memcache server shows a load of 0.5 or so, the traffic leaving the > server is about 20MB/s, curr_connections is 1357. > > My question is, what would an overloaded memcache server look like? > CPU, RAM and network connection are all underused (from what I can > see), so why under high load is PHP (occasionally) unable to connect? > > People are also reporting "strange errors" during this time as well > (blank pages, 503's), which I assume is from this memcache issue. > > > Any help would be appreciated. > > Chris > > > The exact PHP error is: > > [Thu Feb 26 12:57:31 2009] [error] [client xx.xx.xx.xx] PHP Warning: > Memcache::pconnect() [<a href='function.Memcache- > pconnect'>function.Memcache-pconnect</a>]: Can't connect to > xx.xx.xx.xx:11211, Unknown error (0) in /path/to/lib/ > lib_memcache.inc.php on line 121, referer: http://xxx/etc. > -- awl
