Strange memcached behavior on stress test

Paul T pault12345 at
Sun Jun 11 05:30:17 UTC 2006

Is it happening on 64bit linux by any chance?

We got the similiar trouble once - after running
memcached instance for 3 weeks in a row. 


--- Stephen Woodbridge <woodbri at>

> Hi all,
> I asked a question in my email about the stress test
> script, but I think 
> it might have gotten lost in the other information I
> posted. So I'll ask 
> again.
> Running the stress test with multiple clients
> eventually starts to 
> generate a lot of failures. After pushing a large
> number of GB through 
> the cache (like 64 GB+, don't remember the exact
> number) we started 
> getting a lot for failures on the test clients, like
> one was failing 30% 
> and another failing 60% of its sets. Restarting the
> server cleared the 
> problem until we pushed a lot of data through the
> cache again.
> So what is going on? Is this the cache fragmentation
> problem? Is there a 
> fix for this problem? Other thoughts?
> Thanks,
>    -Steve

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