[ic] mod_interchange and Apache MaxClients

John1 list_subscriber at yahoo.co.uk
Thu Nov 17 13:46:06 EST 2005

On Thursday, November 17, 2005 4:08 PM, rphipps at reliant-solutions.com wrote:

>> From: interchange-users-bounces at icdevgroup.org
>> [mailto:interchange-users- bounces at icdevgroup.org] On Behalf Of
>> jeff at hisgirlfridays.com
>> Sent: Thursday, November 17, 2005 5:45 AM
>> 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'm running the 4.8 series as well and unfortunately we have a lot of
> custom code in the server portion that we'd need to break out if we
> were to upgrade IC at this point.  We are doing a complete site
> rewrite that is based off of 5.3.x, so we are trying not to do two
> upgrades if possible.
> We also cannot run in High traffic mode to see if the traffic mode is
> part of the problem because in low and high traffic mode we get double
> charges and sendmail/pgp can fail.
> Jeff and John have you tried high or low traffic mode to see if the
> issue goes away in those modes?
I will try in high traffic mode in few days time once my payment service 
providers problems have settled dow.  But, I hope I don't get loads of 
double charges :-o 

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