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SubjectRe: increasing the 512 process limit at run-time?
On Wed, 7 Feb 2001, Mr. James W. Laferriere wrote:

>Date: Wed, 7 Feb 2001 04:43:19 -0800 (PST)
>From: Mr. James W. Laferriere <>
>To: Matt Bernstein <>
>Content-Type: TEXT/PLAIN; charset=US-ASCII
>Subject: Re: increasing the 512 process limit at run-time?
> Hello Matt , At what uptime does one hit this limit ?
> 4:40am up 444 days, 12:58, 1 user, load average: 0.00, 0.00, 0.00
>uname -a
>Linux filesrv2 2.2.6 #1 SMP Thu Jul 1 20:33:30 PDT 1999 i686 unknown
> Not that that is anything spectacular , just looking for
> rough idea of uptime before hitting the NR_TASKS limit .
> Tia , JimL

The NR_TASKS is the maximum number of simultaneous running
processes in the system and has nothing at all to do whatsoever
with the uptime.

In 2.2.x NR_TASKS is set in stone during compile time. If you
need more simultaneous tasks you must recompile with NR_TASKS set
higher. You can set it as high as 4090 or so (read the docs).

In 2.4.x it can be set via proc at runtime.

Again, uptime means absolutely nothing.

Mike A. Harris - Linux advocate - Free Software advocate
This message is copyright 2001, all rights reserved.
Views expressed are my own, not necessarily shared by my employer.
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