first time user with out of memory question
time at digg.com
Tue Jun 13 00:12:34 UTC 2006
> Our memcached nodes utilise 1/50% CPU at 400 hits/sec. At volumes
> around 400 hits/sec, the CPU:workload (C:W) ratio is <1. Assuming a
> constant C:W ratio, this means we should utilise <<20% CPU at 400k
By the way, if anyone actually cared to follow that paragraph, I
recommend you discard what you might've gleaned from it. I've gone back
to check my work and found a faulty assumption.
Which brings me to a question... when asking Memcached for stats, what
is the meaning of these two values?
They are counters. But how do you count user and system resource usage?
If the user value changes from 100 to 103 in 10 seconds, and the system
value from 1000 to 1024 in the same 10 seconds... what does that mean?
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