 | | | Subject: Re: Having problems starting ~10k worker threads in apache | Subject: Re: Having problems starting ~10k worker threads in apache 2007-09-19 - By Tom Sightler
Back
On Tue, 2007-09-18 at 11:34 -0400, Ijaaz A. Ullah wrote:
> I'm trying to create an instance of apache that spawns ~10k worker
> threads. Due to design requirements, I can only use RHEL3 for this
> application.
>
> Here is the contents of my <IfModule worker.c>
>
> <IfModule worker.c>
> ThreadLimit 400
> ServerLimit 32
> StartServers 32
> MaxClients 12800
> MinSpareThreads 12600
> MaxSpareThreads 12800
> ThreadsPerChild 400
> MaxRequestsPerChild 0
> </IfModule>
>
>
> No matter what combination I use, I can not go higher than about 7k.
> Anything past that gives me these errors:
>
>
> [Tue Sep 18 15:07:36 2007] [alert] (12)Cannot allocate memory:
> apr_thread_create: unable to create worker thread
> [Tue Sep 18 15:07:37 2007] [alert] (12)Cannot allocate memory:
> apr_thread_create: unable to create worker thread
>
> Any help would be appreciated.
Perhaps a silly questions, but have you increased "threads-max"
in /proc/sys/kernel? It seems like the older RHEL3 systems defaulted to
around 8k threads system wide, which somewhat matches with your
observations.
A command something like the following should work:
sysctl -w kernel.threads-max=15000
If that works for you just add the parameter to your /etc/sysctl.conf
file and you'll be good on future reboots.
Later,
Tom
--
Taroon-list mailing list
Taroon-list@(protected)
https://www.redhat.com/mailman/listinfo/taroon-list
|
|
|