Re: [ic] IC not responding

["John1" <suppressed>]

On Monday, November 14, 2005 7:12 PM, suppressed wrote:

> Ron Phipps wrote:
> > > From: suppressed
> >
> > [mailto:interchange-users-
> >
> > > suppressed On Behalf Of suppressed
> > > Sent: Friday, November 11, 2005 11:24 AM
> > >
> > > On Fri, Nov 11, 2005 at 08:40:30AM -0800, Ron Phipps wrote:
> > >
> > >
> > > > We've got a weird issue going on right now where all of a sudden IC 
> > > > will
> > > > stop servicing requests and utilization of the server goes to just 
> > > > about
> > > > 0.  If I restart IC everything goes back to normal.  This has gone on
> > > > for the last 3 days at different points in the day.  The ip address
> > >
> > > The next time this happens, restart apache instead of IC and tell me if
> > > it goes back to normal.  If it does, then I have more to say about
> > > the issue and also have a potential fix.
> > >
> > > Jeff
> >
> >
> > Unfortunately this was not the case.  The potential fix of using
> > apache's MaxRequestsPerChild 1000-5000 did not seem to help.
> >
> > Does anyone know of a way to troubleshoot IC, perhaps with debug
> > statements to see why it can no longer handle requests?  IC is still
> > running, I can see all the rpc servers, however they do not take up
> > much cpu usage and it's almost like they are not even there.
> > Apache/mod_interchange does not error out and a restart of IC
> > instantly allows Apache to start handling requests again.
>
> First of all you should try to strace all the IC processes to see if
> it does system calls and watch your logfiles (IC and system logfiles) as
> well. If no system calls happened it might caught up in an infinite
> loop somewhere.
Do you know if you are bumping up against your Apache MaxClients setting (in 
httpd.conf)?

i.e. Can you see the following entry in your Apache error.log when the 
problems start?
"server reached MaxClients setting, consider raising the MaxClients setting"

Just a possibility, as we are having a similar problem (but may be unrelated 
to yours) caused by bumping up against Apache MaxClients (which I have just 
posted to mailing list as "mod_interchange and Apache MaxClients"). 


		
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