[horde] Apache/Horde unresponsive

[Toomas Aas]

Daniel A. Ramaley wrote:

> When Apache intermittently stops responding to web requests, there is an 
> entry like this printed in Apache's error log:
>     server reached MaxClients setting, consider raising the
>     MaxClients setting
> MaxClients is set to 128. While we have approximately 5000 people who 
> use the server, i doubt that more than 128 simultaneous connections are 
> ever made. I have checked Apache's access_log and error_log at the 
> times when the above message occurs, and not found anything unusual. 

It seems that there is one more thing you could check, which you haven't
checked yet :) Configure Apache's server-status handler and try to have
a look at status information when the problem occurs. This may give you
some idea what all those 128 clients are doing.

It is, of course, possible that when the problem occurs Apache won't show
you the status information either. However, you *may* be able to get to
the status page if you wait long enough (until one of the Apache children
is freed).

Also, have you looked at logs of other services "behind" Apache, such as
your IMAP server and your preferences container (PostgreSQL, I understand).
Maybe there's some problem there which causes the Horde services to slow down,
making lots of clients "wait" at Apache, where they gather until the MaxClients
limit is reached.

-- 
Toomas Aas --------------------------------------------------------
|arvutivõrgu peaspetsialist | head specialist on computer networks|
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