On Fri, 18 Mar 2005, Jorgen Rosink wrote:
> Yeah, that's why I have no clue how it could be that sometimes there's
> a stall for about 5 seconds client side (congestion free network btw).
Try the following
squidclient -g 60 /squid-internal-static/icons/anthony-unknown.gif & vmstat 1 60
is there any irregularities observed in the output of the above when the
clients stall?
One thing which I experienced at a customer recently is if you are using
the Linux ext3 filesystem. It is then quite important that the cache
filesystem is mounted with "noatime", and also a good idea to increase the
ext3 journals size. If not the ext3 filesystem will temporarily "lock up"
while flushing the journal when under high load, effectively halting
Squid. This can be seen in the output of the command above as periods
with a lot of pageout activity with no responses from Squid.
Regards
Henrik
Received on Fri Mar 18 2005 - 09:22:58 MST
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