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From Jeff Trawick <traw...@gmail.com>
Subject Re: [users@httpd] mod_proxy: ProxyPass max parameter has no effect
Date Thu, 15 Jul 2010 19:13:46 GMT
On Thu, Jul 15, 2010 at 2:26 PM, Alessandro Vernet <avernet@scdi.org> wrote:
> Jeff,
>
> On Thu, Jul 15, 2010 at 10:53 AM, Jeff Trawick <trawick@gmail.com> wrote:
>> AFAIK the only thing you can do with prefork to avoid overrunning the
>> backend is to set MaxClients no higher than the maximum number of
>> backend connections.  But that's useless when you expect httpd to
>> forward only a subset of requests to the backend.
>
> And even if all the requests go to backend servers, that wouldn't
> satisfy the requirement of "max per back-end server", MaxClients would
> only be a "overall max". (I.e. if I have 4 back-end servers, and want
> 4 max concurrent connections per server, I could set MaxClients to 16,
> but Apache could at some point in time send more than 4 concurrent
> connection to a given back-end server.)

oh, right

>
>> Upcoming httpd 2.4 has loadable MPMs that can be switched out just
>> like regular modules.  I hope that vendors provide 2-3 MPMs on Unix,
>> with a switch as easy as changing the LoadModule directive and
>> checking the default config for the new MPM.
>>
>> But yes, until then this may be a pain to change.
>
> Then I'm looking forward to 2.4!
>
> Alex
> --
> Orbeon Forms - Web forms, open-source, for the Enterprise -
> http://www.orbeon.com/
> My Twitter: http://twitter.com/avernet
>
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