Re: [squid-users] Re: squid with pdns, bandwidth control issue

From: Amos Jeffries <>
Date: Fri, 29 Jun 2012 23:54:24 +1200

On 29/06/2012 11:02 p.m., Muhammad Yousuf Khan wrote:
> On Fri, Jun 29, 2012 at 3:34 PM, Amos Jeffries wrote:
>> On 29/06/2012 10:09 p.m., Muhammad Yousuf Khan wrote:
>>> see the ping delay of my proxy server.
>>> see first few lines which is before download when i start download a
>>> huge file it when to 3000 which is too much and this is the only
>>> reason i think why it is happening. now at the bottem of this ping
>>> responce you will see when i cancled the download job things back to
>>> normal.
>> Uhm, the entire network connectivity to a box going slow because one
>> application is running...
> sorry i didnt get your point, i mean i am working in a small network
> with just 30 nodes and i think it should easily handle the 30 node
> network becuase in my last company i was using IPCOP which was an
> excellent firewall with squid and it runs well with 120 users with
> same specs, btw what do you mean by "my box is slow becuase one
> application is running"

The buffer bloat description should explain it a bit better than I can.
Essentially there is no reason why ping should be affected so badly by
Squid (or any other program) moving TCP packets. Regardless of the
number of users or network size. But due to buffer and queue problems,
it often does.

> note : i am using KVM virtual machine.

Hmm. IIRC there was some problem found a year ago with virtual machines.
We narrowed it down to something inside the image. Newely created VM had
no issues but cloned ones (even cloned from a fresh new image) would go
very slow under load for no identifiable reason. Your issue might be that.

Received on Fri Jun 29 2012 - 11:54:36 MDT

This archive was generated by hypermail 2.2.0 : Fri Jun 29 2012 - 12:00:04 MDT