From: Brandon Hilkert (bhilkertvt.edu)
Date: Fri Mar 20 2009 - 12:32:26 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

----- Original Message -----
From: "Victor Duchovni" <Victor.Duchovnimorganstanley.com>
To: <postfix-userspostfix.org>
Sent: Friday, March 20, 2009 1:20 PM
Subject: Re: Performance tuning

> On Fri, Mar 20, 2009 at 01:01:55PM -0400, Brandon Hilkert wrote:
>
>> I've been running everything from scripts, hoping to zero in on the
>> bottleneck.
>
> How many messages are you sending in parallel in the injector scripts?

My local script on the postfix machine itself. It's just a single shell
script in a for loop.

Is there a better way to test?

>
> SMTP is a high latency half-duplex protocol, and a single injector will
> never stress the capacity of the Postfix SMTP server. On a low delay,
> high bandwidth network link, you need around 10 parallel injectors to
> before you get anywhere near peak server throughput.
>
> --
> Viktor.
>
> Disclaimer: off-list followups get on-list replies or get ignored.
> Please do not ignore the "Reply-To" header.
>
> To unsubscribe from the postfix-users list, visit
> http://www.postfix.org/lists.html or click the link below:
> <mailto:majordomopostfix.org?body=unsubscribe%20postfix-users>
>
> If my response solves your problem, the best way to thank me is to not
> send an "it worked, thanks" follow-up. If you must respond, please put
> "It worked, thanks" in the "Subject" so I can delete these quickly.

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]