amrd disk performance drop after running under high load
lol at chistydom.ru
Fri Nov 9 05:15:45 PST 2007
Kris Kennaway wrote:te:
> In the "good" case you are getting a much higher interrupt rate but with
> the data you provided I can't tell where from. You need to run vmstat
> -i at regular intervals (e.g. every 10 seconds for a minute) during the
> "good" and "bad" times, since it only provides counters and an average
> rate over the uptime of the system.
Now I'm running 10-process lighttpd and the problem became no so big.
I collected interrupt stats and it shows no relation beetween
ionterrupts and slowdowns. Here is it:
Also I have similiar statistics on mutex profiling and it shows there's
no problem in mutexes. http://220.127.116.11/gprof/mtx-graph/mtxgifnew/
I have no idea what else to check.
With best regards,
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