memcache strange behavior, high server load

Dave Cheney dave at
Mon Nov 19 05:53:53 UTC 2007

Hi Masry,

	You might be looking at this the wrong way around. For whatever  
reason you machine decided that it was bang out of space and nixed the  
memcache process. It may have done it in a way that left the unix  
socket around. Each php process would have been hammering on that  
socket waiting for a response. As soon as memcached came back, they  
all cleared.



On 19/11/2007, at 4:49 PM, Masry Alex wrote:

> I installed memcached 1.2.2 and I connect using PHP5 using PECL  
> extension with a unix socket as it's only one machine.
> Quote:
> memcached -d -u www -m 1000 -c 10000 -s /server/memcached.sock
> my average server load is 0.50%
> after I run memcache for a day or two then I get server load to jump  
> suddenly to 100%
> I get that on my syslog
> Quote:
> Nov 2 10:58:44 server kernel: Out of Memory: Killed process 10337  
> (memcached).
> when I restart memcached server returns to its normal load
> in most of my caching I set TTL for the cache vars mostly 1 day

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