Re: 2.2.x process limits (NR_TASKS)?

Miquel van Smoorenburg (miquels@cistron-office.nl)
Thu, 18 Oct 2001 19:29:57 +0000 (UTC)

In article <Pine.LNX.4.33.0110181139380.30308-100000@tigger.unnerving.org>,
Gregory Ade <gkade@bigbrother.net> wrote:
>We're running into what appears to be a 256-process-per-user limit on one
>of our webservers, due to the number of processes running as a specific
>user for our application. I'd like to increase the process limit, and
>*THINK* that to do so i need to increase NR_TASKS in
>/usr/src/linux/include/linux/tasks.h.

--- linux-2.2.19.orig/include/linux/tasks.h Mon Dec 11 01:49:44 2000
+++ linux-2.2.19/include/linux/tasks.h Thu Mar 29 13:08:16 2001
@@ -11,7 +11,7 @@
#define NR_CPUS 1
#endif

-#define NR_TASKS 512 /* On x86 Max about 4000 */
+#define NR_TASKS 2048 /* On x86 Max about 4000 */

#define MAX_TASKS_PER_USER (NR_TASKS/2)
#define MIN_TASKS_LEFT_FOR_ROOT 4

>Also, where can this limit be changed in 2.4.x?

/proc/sys/kernel/threads-max

Mike.

-- 
"Only two things are infinite, the universe and human stupidity,
 and I'm not sure about the former" -- Albert Einstein.


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