Server downtime - are these APC warnings the cause?

Posted by DisgruntledGoat on Server Fault See other posts from Server Fault or by DisgruntledGoat
Published on 2012-09-16T14:48:39Z Indexed on 2012/09/16 15:40 UTC
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Filed under:

apache2

|

ubuntu-10.04

|

php-apc

Yesterday I had a problem with my dedicated server (Ubuntu 10.04, LAMP). It wasn't down per se, but running incredibly slowly as if we had a massive overload of visitors (though I don't think we did).

It's running smoothly again now. I've been checking through log files etc to see if I can find any issues, the only strange thing is a bunch of these errors, occurring at about the same time as the downtime:

[apc-warning] Unable to allocate memory for pool. in [file] on line 49.

And a bit later on:

[apc-warning] GC cache entry '[file1]' (dev=2056 ino=8988092) was on gc-list for 3601 seconds in [file2] on line 746.

Could these errors indicate the cause of the server slowdown, or are they simply a result of the server being slow in the first place? What would be the solution?

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