Re: [squid-users] Squid Optimization

Hey:

Thanks for the response.

I just tried moving to 3.2.8-1 from this repo:
http://www2.ngtech.co.il/rpm/centos/6/$basearch

I chosen 3.2.8 instead of the 3.3.5 because I looked at the init
script and noticed a few errors with it. And I was primarily upgrading
to get access to the workers configuration option, which is available
in 3.2. I was also able to fix the issue I had getting that running.
Turns out the RPM package didn't create a necessary run directory
(/var/run/squid) for the socket files. Once I created that it started
up just fine.

So my hope is this provides better performance and utilizes the SMP
capabilities of our proxy host. Was my thinking correct in that in
version 3.1 that requests would get queued up and that is why there
was a latency in processing the request? For 3.1 how many concurrent
requests could the squid daemon handle at one point?

Kind of a different topic, but I am having trouble getting the nolog
option to work. In version 3.1 I simply had like this:

.jira.com
.concursolutions.com
.typesafe.com
.maven.org
.surveymonkey.com
.salesforce.com
.webex.com

Saved it as nolog.txt and added the following to squid.conf:

acl NoLogSites url_regex -i "/etc/squid/nolog.txt"
log_access deny NoLogSites

However, when I use that now it doesn't log anything.

Thanks again

On Tue, Jun 11, 2013 at 3:58 PM, Eliezer Croitoru <eliezer_at_ngtech.co.il> wrote:
> On 6/12/2013 12:43 AM, Matthew Ceroni wrote:
>>
>> We are running squid as our primary proxy here at my office.
>>
>> What I am noticing is that connectivity is fine but every now and then
>> the browser sits with "Sending request". If I hope on the proxy and
>> view the access log I don't see it logging my request. After a few
>> seconds, sometimes as many as 10 - 15, the request comes through.
>>
>> My thought process is that the request is getting queued. I did a
>> little research about maximum concurrent connections but all I came
>> across was how to limit a specific user to max concurrent connections.
>>
>> Prior to deploying squid I read through some performance and
>> optimization guides. I increased the open file handles to 8192 and am
>> currently monitoring those to see if they run out (but usually don't
>> get above 1600 or so in use).
>>
>> I am more familiar with Apache in which you can specify how many
>> children to spawn, workers, etc to handle requests. Is there something
>> similar with squid? The machine we are running squid on has 4 cores
>> and the load barely breaks 0.25.
>>
>> Running this on CentOS which officially only has 3.1.10 in their
>> repositories. I tried installing the latest stable version and
>> configure the workers. However I have never been able to get squid to
>> start-up with that enabled. Always says it can't bind to port: no such
>> file or directory. Without going to the latest version that supports
>> the workers option, is there something in squid where you can specify
>> how many process to spawn, or how many concurrent connections a squid
>> process can handle (queue depth)?
>>
>> Thanks in advance
>>
> There is some small bug related to SHM which can be fixed.
> What RPM have you tried on your CentOS server? or maybe self compiled?
> if you have used my RPM there is a small bug in the init script that will be
> fixed in the next release of 3.3.6 hopefully.
> if you can share the info on the bug We can might help you solve it.
>
> Eliezer
Received on Tue Jun 11 2013 - 23:18:17 MDT