Re: [squid-users] Squid performance in the tank.

Firstly, upgrade from Squid-2.5 to Squid-2.6. If you're on Linux, FreeBSD
(or soon, Solaris) then you'll definitely notice the CPU drop.

I'd check that your DNS is functioning, that your MTU is consistent
everywhere, you're not filtering ICMP. Saying "the only thing that
changed is the path it takes to get to the internet" is basically
admitting you changed something major; being confused over why a network
application changed behaviour when your network has changed is a bit
silly. :)

I'd do some test requests through the proxy whilst using tcpdump
on the squid proxy to identify what its trying to do -during- that
request. You might spot something.

Adrian

On Thu, Jul 05, 2007, Jeff Honey wrote:
>
> I don't know that I've ever had occasion to ask the squid group anything before but this one thing has me stumped. We just moved our infrastructure from one facility to another and our squid servers' performance has really gone down the tubes. Request processes have slowed to a crawl. Admittedly, we have made some changes to the routing of external requests (as we are no longer in a flat network) but all the systems in that same IP network have no trouble at all getting to the outside world.
>
> When squid receives a page request, it just seems to sit on it for a few seconds before doing anything with it and the end user doesn't see any activity from squid for a minute or longer. This was a perfectly functioning squid setup prior to our move. The only thing that has changed is the path it takes to get to the Internet. How should I go about finding out if it is squid with the problem or if it just something boneheaded I've done somewhere else?
>
> <snip>
> Squid Cache: Version 2.5.STABLE1-20030206
> configure options: --prefix=/usr/local/squid25 --enable-dlmalloc --enable-ssl --enable-openssl --enable-useragent-log --enable-snmp --enable-kill-parent-hack --enable-time-hack --enable-delay-pools --enable-referer-log --enable-underscores '--enable-auth=basic digest ntlm'
> </snip>
>
> ???????????????????????????????????
> ? Jeff Honey, Network Administrator
> ? PS America, Inc.
> ? 4426 N. Orange Blossom Trl
> ? Orlando, FL 32804
> ? 407-521-1011 voice
> ? 407-521-1007 fax
> ???????????????????????????????????

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