Re: Help on MaxClients setting, consider raising the MaxClients setting

["Arnab Ganguly" <aganguly01@xxxxxxxxx>]

Hi,
Thanks for correcting me about the ThreadsPerChild  value.I overlooked 25 as max value , it is actually the default value.

Also I saw the Apache code file worker.c basically prints the error when the idle thread count is lesser than the 
MinSpareThreads.Now if I reduce the value of MinSpareThreads will my transaction gets slowed?Concept of MinSpareThreads and MaxClients is little bit confusing to me?

All these for as I am trying to investigate for a time 
out.At a particular moment of time I get a  time out ie when  I ping the  websever there is a time out happening not able to figure it out.

One more thing how do u set the ExtendedStatus in the config file.
A
Thanks in advance
-A

On 3/31/07, Sander Temme <sctemme@xxxxxxxxxx> wrote:

Arnab,

On Mar 30, 2007, at 11:21 PM, Arnab Ganguly wrote:

> What I saw was the ServerLimit value = 2 when I kept I saw one root
> and two daemon process.And among the two daemon it is the only one
> daemon handles all my request.So my requirement is met.But when I
> replace the value of ServerLimit = 1 the above behavior is also same.

ServerLimit has no impact on the number of processes actually
created: it governs the size of some data structures Apache creates
when it starts up. The actual limiting value is MaxClients and while
it is true that MaxClients / ThreadsPerChild <= ServerLimit, I
wouldn't worry about it too much.

> The other config was followed was same as below
>
> StartServers 1
> MaxClients 25
> MinSpareThreads 25

As Joshua points out this is a confusing value since you don't allow
the server to spawn more children to satisfy the idle thread
requirement.  Zero would be a more adequate value but I don't know if
Apache supports that.

> MaxSpareThreads  25
> ThreadsPerChild  25
> MaxRequestsPerChild 0.
>
> The minspare threads I will reduce it to 5 or to some lower
> value.But I still get the error as "MaxClients setting, consider
> raising the MaxClients setting ".

Apache logs this when it reaches the MaxClients value.  Your setting
are such that this will always happen (since it'll spawn one child of
25 threads on startup).  The line in the error log has no other
implication: since you are consciously configuring for this situation
it is completely harmless.

> I can't increase the value of MaxClients ad the number of active
> child process has to be one also the Threadsperchild has to be 25
> as this is the max value in Unix.

I don't think this is the case.  Our compile-time default maximum is
64, but you can change that using the ThreadLimit directive:

http://httpd.apache.org/docs/2.2/mod/mpm_common.html#threadlimit

> So is there any other way I can subside the error also my
> requirement is met.I am new to apache and sorry for some basic
> qustions.

Don't worry about the MaxClients error: it is harmless and attends
you to a condition that you explicitly create.

S.

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