Re: [squid-users] Amount of Bandwidth squid can handle

We've been running Squid 2.6 for 5+ years with a 10Mb full duplex connection serving ~650 active users. It has handled peak loads of 60-90 req/sec without issue, which represents a fully utilized 10Mb link (managed with delay pools). Last month we upgraded to a full 1Gb (yes 100x speed increase!) on a trial basis. During a one week trial, we saw about 2-3x bandwidth use (or 20-30Mbps sustained average) with little affect on the proxy server load. During tests we were able to manage speedtest results of 250-300Mbps from a single Gb connected host to Speakeasy's Seattle test node, and saw no difference between going direct or via squid. We were also able to achieve a full 100Mbps speed result on each of 4 simultaneous hosts tested via squid (each was using 100Mb NIC). So far, the only issue we have seen is a problem our log files exceeding 2Gb in less than 24 hours, which required a re-compile to add the '--with-large-files' option.
Still far short of the 60-100Mb rates you mention (are these peak or sustained?), but our server appears to have plenty of breathing room left, and is modest by today's standards:

Dell PE2850 with Dual Quad Xeons
Ubuntu 6.06 32bit, 4Gb RAM
6x 15K 72Gb SCSI drives, 4 for cache, 1 for logs, one for system, running XFS
Squid 2.6stable20
Single Gb NIC in use.
Lots of ACLs (300,000 lines), delay pools, all clients authenticated via AD

I expect we will need to do more tuning since opening up the bandwidth, but so far, things are going fine. Prior to this week's re-compile, the system was running 24x7 since April 08. :-)

Hope this helps.

-- 
Shawn Wright 
I.T. Manager, Shawnigan Lake School 
http://www.shawnigan.ca 
----- Original Message ----- 
From: "nima chavooshi" <nima0102_at_gmail.com> 
To: squid-users_at_squid-cache.org 
Sent: Wednesday, January 6, 2010 11:28:23 AM GMT -08:00 US/Canada Pacific 
Subject: [squid-users] Amount of Bandwidth squid can handle 
Hi 
First of all thanks for sharing your experience on this mailing list. 
I intend to install squid as forward cache in few companies with high 
HTTP traffic almost 60 or 80 or 100Mb. 
Can squid handle this amount of traffic??of course I do not have any 
idea about selecting hardware yet. 
May you tell me maximum of bandwidth you could handle with squid?it's 
so good if you give me spec of your hardware that run squid on high 
traffic. 
Thanks in advance 
-- 
N.Chavoshi