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Re: [ic] mod_interchange and Apache MaxClients


On Thu, Nov 17, 2005 at 10:46:37AM -0000, John1 wrote:

> In effect, I think I have verified that Apache doesn't start responding 
> again even if port 80 were to be blocked.  Once MaxClients has been hit 
> Apache stops servicing requests as it won't spawn any more processes and 
> for whatever reason non of the Apache processes ever die after this point, 
> even if the server is left for many hours over night when I know the 
> traffic to my site is very low indeed.  Ron & Jeff - do you also see this 
> effect?

Yes, none of the servers die.  I can also add that the event is 
predicated by mod_interchange and IC failing to communicate and holding 
apache children open.  During this initial period, the web server will 
serve non-IC content but any requests for IC pages "freeze up".  As 
requests for IC pages stack up, MaxClients is eventually reached and 
apache stops serving requests entirely.

One of the reasons I never mentioned the issue before is because I am 
running the IC 4.8 series .  I am pretty sure a lot of the 
process-forking code was improved between 4.8 and the current version 
and those improvements could very well resolve the issue.  

> I don't think that the issue is anything to do with my Virtual Server 
> environment, but I thought I better throw it into the mix. 

On my side, the issue has spanned multiple physical servers with 
completely different hardware and multiple versions of linux and debian.


Jeff
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