[ic] mod_interchange and Apache MaxClients

John1 list_subscriber at yahoo.co.uk
Thu Nov 17 13:47:15 EST 2005

On Thursday, November 17, 2005 4:04 PM, rphipps at reliant-solutions.com wrote:

>> From: interchange-users-bounces at icdevgroup.org
>> [mailto:interchange-users- bounces at icdevgroup.org] On Behalf Of John1
>> Sent: Thursday, November 17, 2005 2:47 AM
>> On Wednesday, November 16, 2005 11:03 PM, kevin at cursor.biz wrote:
>>> Here's another test to add to the list:
>>> When everything appears to pause, block port 80 at the firewall for
>>> a little while.  Remove the block and check whether the backlog has
>>> been cleared and IC is responding once again.  If this test
>>> succeeds then the problem is flood/backlog related.  If not then,
>>> well, it was worth a try.
>> 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?
> I will take a look next time the event happens while I'm in the
> office. What you describe seems to be what happened when MaxClients
> was reached last time.  Lots of processes running, but none of them
> getting anything done.

> I did notice some MySQL processes taking more time and processor usage
> then normal last night so I decided to run an optimize on all of my
> tables.  The site definitely sped up and the site did not need a
> restart last night.  I'm not sure if they are connected or not, but
> perhaps John and Jeff can run optimize on their tables and then see
> if the issue continues to happen.
I have a cron job to optimize the tables once a week in the middle of the 

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