Re: [squid-users] Low performance even with low number of users

From: Pavel Kazlenka <>
Date: Fri, 11 Oct 2013 15:26:48 +0300

Could you check also availability of primary DNS server on proxy node? I
suspect that the one is not available, so squid makes dns query to
primary server, waits for timeout (5 seconds by default IIRC) and then
queries the secondary DNS server (which answers to squid and you get
your page with 5-7 sec delay).

On 10/11/2013 03:05 AM, Amos Jeffries wrote:
> On 11/10/2013 4:00 a.m., Luiz Felipe wrote:
>> Hi,
>> I have a "curious" case of low performance with Squid.
>> The symptom is that every request take at least +/- 7 seconds. Even
>> when there is a small number of clients.
>> The browser keeps waiting and when it load, it loads fast.
>> If I allow the client to access the web without proxy, it access
>> really fast. So, there's no bandwidth problems - and in fact it loads
>> fast after the "freeze" period. (with the same DNS, by the way).
> <snip>
>> The hardware is enough for the demand - but maybe the settings are
>> wrong.
>> Version 2.6.STABLE21 (CentOS)
>> Any hints?
> I susect HTTP/1.1 Expect: feature. That feature is being used by more
> and more services around the Internet as HTTP/1.1 support improves in
> the middleware like Squid.
> Please try an upgrade to the current supported stable Squid (3.3.9 as
> of today) and see if you problem simply disappears.
> Amos
Received on Fri Oct 11 2013 - 12:27:51 MDT

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