Like they say in that old short story "The Final Question":
"Not enough data for meaningful answer"
...but could it be swapping?
Try these man pages and commands: free, vmstat, also check /proc/meminfo
The vmstat output is very informative:
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 0 0 2912748 165736 97384 414396 5 4 74 124 3 1 9 2 89 1
where
si/so are blocks swapped in and out bi/bo are blocks moved in and out (AFAIK, only those not swapped)
-- David
--On Thursday, March 31, 2005 4:58 PM -0400 Yezid Mendoza Jimenez <yezidmj@xxxxxxxxx> wrote:
Hi team,
My server running RedHat Enterprise 3.0 is getting slow two days ago. When I check performance I can see the value of iowait around 80% - 95%, when my server is on these values it gets slow to serve web sites and other services like sendmail. Any idea about this issue? Server: Dell PowerEdge 750, P-IV, 2.8Ghz, 1Gb RAM, % disk: 13 - 16% RedHat ES 3.0. Sendmail, MySQL, Apache running virtual hosting. ALl of these are defaults versions on RedHat ES 3.0
I hope you can give an idea about this.
Best Regards, Yezid Mendoza.
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