lkml.org 
[lkml]   [1999]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: low priority soft RT?
Hi,

On Thu, 22 Jul 1999 21:39:48 +0200 (CEST), Rik van Riel
<riel@nl.linux.org> said:

> I have made a fairly substantial SCHED_IDLE patch, but due to
> the (never resolved) deadlock issues I haven't submitted it.

Yes, it really is a loaded gun. A large SCHED_IDLE process can consume
arbitrary system resources, and if there is any single cpu-bound process
preventing it from being scheduled, you won't even be able to kill -9
the SCHED_IDLE task (the kill signal isn't delivered until the task is
next scheduled).

It is much more dangerous than it first appears, and the DoS attacks
look really nasty.

--Stephen

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:53    [W:0.398 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site