httpd-test-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Stas Bekman <s...@stason.org>
Subject Re: getting rid of 'server reached MaxClients setting' error
Date Wed, 28 Apr 2004 18:21:40 GMT
gregames@apache.org wrote:
> Stas Bekman wrote:
> 
>> I think this misleading error is really a bug in Apache:
> 
> 
> I agree.
> 
>> [Mon Apr 26 15:28:44 2004] [error] server reached MaxClients setting, 
>> consider raising the MaxClients setting
>>
>> It sounds like a one-off bug to me. It reports that error when the 
>> number of workers is the same as MaxClients, 
> 
> 
> it's worse than that, I think.
> 
>>    which is perfectly fine. It should only report a problem when a new 
>> request is coming in and there are no free servers/threads to handle 
>> the request.
> 
> 
> I've seen this recently while experimenting with event driven I/O built 
> on top of the worker MPM.  It seems to happen when the parent is trying 
> to increase the number of child processes but they haven't initialized 
> yet and the server is temporarily out of worker threads.  I didn't see 
> the number of active workers reach MaxClients.  Re-examining the test 
> that leads to the message:
> 
>     else if (idle_thread_count < min_spare_threads) {   <== cool
>         /* terminate the free list */
>         if (free_length == 0) {                         <== insufficient
> 
> I'm a little rusty on this code, but looks like free_length is increased 
> when the code finds a process with at least one worker thread with 
> SERVER_DEAD state in the scoreboard.  I don't see where it checks for 
> MaxClients.

Thanks, Greg. Am I right to say that you now have an itch to scratch and get 
it solved? :)

__________________________________________________________________
Stas Bekman            JAm_pH ------> Just Another mod_perl Hacker
http://stason.org/     mod_perl Guide ---> http://perl.apache.org
mailto:stas@stason.org http://use.perl.org http://apacheweek.com
http://modperlbook.org http://apache.org   http://ticketmaster.com

Mime
View raw message