[collectd] memcached timeout (Was: Problems with collectd and KVM)
octo at verplant.org
Sun Aug 24 22:26:23 CEST 2008
On Sat, Aug 23, 2008 at 06:47:40PM +0200, Joost Cassee wrote:
> I've compiled the Lenny package with your patch applied.
> Unfortunately, I still get errors:
that was to be expected: The patch fixed another error that was _caused_
by the timeout, not the timeout itself. The reason for this patch is
that error reporting has been improved.
> Aug 23 17:17:12 paulus collectd: memcached: poll(2) timed out after 10 seconds.
> Does this tell you anything more?
Okay, so it really is a timeout. With the previous message it might have
been an error, too. But this message now clearly states that poll(2) has
> while :
> echo quit | nc localhost 11211
> echo -n '.'
> sleep 1
This isn't exactly the same: The plugin sends a command, then waits for
a response. It's this waiting for the response that's timing out. So
it'd be necessary to send a command that is followed by a response and
check if this response is actually received - and after which period..
I have to admit, though, that all things considered this feels more and
more like a problem in memcached.. Have you checked the memcached
mailing list for reports of a similar problem?
Florian octo Forster
Hacker in training
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