Re: High-volume HAProxy deployment tips?

From: David Rorex <>
Date: Wed, 17 Dec 2008 14:19:13 -0800

On Wed, Dec 17, 2008 at 1:48 PM, Daniel Gentleman <> wrote:

> Hi!
> I've been using HAProxy in a production environment for some time and am
> generally pleased with the results. However, I'd like to get some feedback
> from other users and developers on the best way to tune this for our needs.
> Basically:
> 1. We have two active clusters. One serves LAMP content with Apache and
> the other serves static content (images, thumbnails, etc.) using lighttpd.
> Is there any concern in running multiple HAProxy instances on the same
> server? We are doing so now but last night's load test produced mixed
> results regarding content from the static server.

I'd suggest running a single haproxy. It can manage multiple groups of servers just fine (just add more block to the config file)

> 2. Our proxy server is running FreeBSD 7.0 Stable. Are there any
> recommended kernel or sysctl flags we can put in place to get optimal
> network performance?
> 3. Has anyone noticed performance or stability issues after a certain level
> of bandwidth or number of concurrent connections?

The benchmarks on the haproxy home page show it filling a 10gbit link, so it would seem that it can handle high volumes.

> Thanks much!
> ---Daniel Gentleman
> Systems Administrator

-David R Received on 2008/12/17 23:19

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