amrd disk performance drop after running under high load

Alexey Popov lol at
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.

I have no idea what else to check.

With best regards,
Alexey Popov
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