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I suspected Squid, but I watched it very closely. When it happened again a few minutes ago, I checked the processes using &quot;top&quot;. It showed 0% idle and there were 10 or entries for the command &quot;proxy&quot; - all taking over 4% of CPU with one over 40%. After a minute or so, they disappeared and the system was back to normal - 80% or so idle. Can someone shed some light on what might be causing this?<br />

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I suspected Squid, but I watched it very closely. When it happened again a few minutes ago, I checked the processes using "top". It showed 0% idle and there were 10 or entries for the command "proxy" - all taking over 4% of CPU with one over 40%. After a minute or so, they disappeared and the system was back to normal - 80% or so idle. Can someone shed some light on what might be causing this?


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Can you post output of &quot;uptime&quot; and &quot;free&quot;<br />
<br />
Have you tried using accept filter?<br />
Does setting null che on disk and half of memory for mem cache help on issue?
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Can you post output of "uptime" and "free"

Have you tried using accept filter?
Does setting null che on disk and half of memory for mem cache help on issue?

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<div class="content wysiwyg-content">
Running <br />
CentOS 5.2<br />
Squid Version 3.0.STABLE10<br />
Server is a VM with 1 CPU and 2 GB of RAM allocated.<br />
<br />
During working hours, the CPU on the server peaks at 100% for a minute or two about once an hour. &nbsp;When this happens, all web surfing comes to a half. &nbsp;Using top, squid is the top process. &nbsp;I cannot tell why it maxes out the CPU several times per day. &nbsp;Is it flushing to cache? &nbsp;Any tips on solving this?<br />
<br />
Thanks,<br />
Shannon
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Running 
CentOS 5.2
Squid Version 3.0.STABLE10
Server is a VM with 1 CPU and 2 GB of RAM allocated.

During working hours, the CPU on the server peaks at 100% for a minute or two about once an hour.  When this happens, all web surfing comes to a half.  Using top, squid is the top process.  I cannot tell why it maxes out the CPU several times per day.  Is it flushing to cache?  Any tips on solving this?

Thanks,
Shannon

Squid performance problems

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