top a iowait
Aleš Kozumplík
al_es na seznam.cz
Úterý Únor 15 21:44:37 CET 2005
On Monday 14 February 2005 02:10 pm, Zdenek SUTR Kaminski wrote:
> Zdravim,
>
> na serveru nam bezi nejaka databazova aplikace. Vysledek topu vypada
> obcas nasledovne:
>
>
> 14:02:06 up 4 days, 19:16, 4 users, load average: 2.21, 2.19, 2.12
> 217 processes: 215 sleeping, 1 running, 1 zombie, 0 stopped
> CPU states: cpu user nice system irq softirq iowait idle
> total 0.0% 0.0% 1.8% 0.0% 0.0% 12.1% 85.9%
> cpu00 0.0% 0.0% 0.0% 0.0% 0.0% 19.2% 80.7%
> cpu01 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 100.0%
> cpu02 0.0% 0.0% 7.4% 0.0% 0.0% 25.9% 66.6%
> cpu03 0.0% 0.0% 0.0% 0.0% 0.0% 3.7% 96.2%
> Mem: 3837380k av, 3705120k used, 132260k free, 0k shrd, 244728k
> buff
> 1676632k actv, 1164716k in_d, 90284k in_c
> Swap: 4096312k av, 14552k used, 4081760k free 2638592k
> cached
> ...
>
> Zda se, ze problemem by v budoucnu mohly byt IO operace? Kde mam prosim
> dale badat a hledat potencialni uzke hrdlo?
>
> Jedna se o RHEL 3 AS, 2.4.21-15.ELsmp.
>
> Z.K.
>
dd,
resil jsem podobny problem minuly tyden - mrknete na vlakno "DMA u sata". ma
to docela zajimavy zaver ohledne 2.6 jadra.
Al_
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