top a iowait

Zdenek SUTR Kaminski sutr na valachian-labs.com
Pondělí Únor 14 14:10:26 CET 2005


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.




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