RE: [squid-users] transparency Squid very slow internet

I don't think it's the problem when I see the results

Median Service Times (seconds) 5 min 60 min:
        HTTP Requests (All): 0.05046 0.05331
        Cache Misses: 0.05046 0.05331
        Cache Hits: 0.00000 0.00000
        Near Hits: 0.00000 0.00000
        Not-Modified Replies: 0.00000 0.00000
        DNS Lookups: 0.00094 0.00094
        ICP Queries: 0.00000 0.00000

And for the answer by Amos Jeffries
It's usually regex ACL at fault when speed drops noticably.

Check that:
  * ACL are only regex when absoutely necessary (dstdomain, srcdomain, dst, src are all better in most uses).
   ie acl searchengines dstdomain google.com yahoo.com

  * limiting regex ACL to only be tested when needed (placing a src netblock ACL ahead of one on the http_access will speed up all requests outside that netblockk).
   ie http_access allow dodgy_users pornregexes

I have just dstdomain, src, dst in my acl.
The only acl conatins regex is that line

acl msnmessenger url_regex -i gateway.dll

Thanks
----------------------------
Guillaume Chartrand
Technicien informatique
Cégep régional de Lanaudière
Centre administratif, Repentigny
(450) 470-0911 poste 7218
-----Message d'origine-----
De : Thomas Harold [mailto:tgh@tgharold.com]
Envoyé : 7 mars 2008 11:38
À : Guillaume Chartrand
Cc : squid-users@squid-cache.org
Objet : Re: [squid-users] transparency Squid very slow internet

Guillaume Chartrand wrote:
> Hi I run squid 2.6.STABLE12 on RHEL3 AS for web-caching and filtering
> my internet. I use also Squidguard to block some sites. I configure
> squid to run with WCCP v2 with my cisco router. So all my web-cache
> traffic is redirected transparently to squid.
>
> I don't know why but when I activate the squid it's really decrease
> my internet speed. It's long to have page loaded, even when it's in
> my network. I look with the command top and the squid process run
> only about 2-3 % of CPU and 15% of Memory. I also run iftop and I
> have about 15 Mb/s Total on my ethernet interface. I don't know where
> to look in the config to increase the speed. I use about 50% of disk
> space so it's not so bad

Another possible issue is that squid is having to wait on a slow DNS
server. Take a look at the mgr:info report:

$ /usr/sbin/squidclient mgr:info

And look at "Median Service Times" section. In our case, DNS lookups
were in the 5+ second range, due to the primary DNS server being broken.
  So squid was asking the primary DNS server, waiting 5 seconds, then
asking the backup DNS server. A normal squid server will be servicing
all requests in under 1 second (depending on your load).
Received on Fri Mar 07 2008 - 09:46:51 MST