RE: [squid-users] CPU saturation?

 
James,

On my last Internet proxy, I've almost the same config(no cache) as Your
proxy.

I added this line to my conf:
offline_mode on

And commented out those unuseful lines:
acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY

The cpu load lowered by 10%.

Ciao,

Graziano
 

ELSAG

SSC Direzione Servizi Continuativi

Graziano Sommariva

ICT Network Manager

* +39-10-658.3921
* +39-348-8558742
* Graziano.Sommariva@elsag.it

-----Original Message-----
From: James Vanns [mailto:jimv@canterbury.ac.uk]
Sent: mercoledì 16 novembre 2005 12.22
To: squid-users@squid-cache.org
Cc: Paul Mills (paulm@canterbury.ac.uk); Benjamin Tanner
Subject: [squid-users] CPU saturation?

A question to the floor. We are running squid 2.5STABLE3 and have a
non-caching setup including the following configuration statements:

<snip>
cache_dir null /dev/null

acl all src 0.0.0.0/0.0.0.0
no_cache deny all

ident_lookup_access deny all
request_timeout 1 minute
connect_timeout 1 minute

fqdncache_size 2048
pipeline_prefetch on

half_closed_clients off
client_persistent_connections off
server_persistent_connections off
</snip>

With approximately 3000 open file descriptors (configured at compile time
and set at runtime with ulimit -HSn 16384) and an equivalent no. of
client/server TCP connections we see a constant CPU usage of ~95-100%.
Is this normal!? The hardware is as follows:

Dual Intel(R) Xeon(TM) CPU 3.20GHz (Linux of course manages the CPU affinity
as we know squid isn't multi-threaded) 6G of memory

Disk stats shouldn't matter as we aren't caching.

If this is not normal do we need to upgrade to patch a known bug that I have
failed to find amongst all the squid resources on the NET?

Any help would be appreciated.

Regards,

Jim Vanns

--
James Vanns BSc (Hons) MCP
Canterbury Christ Church University
Senior Systems Programmer (Linux / C & C++) Encryption Key:
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