Messages in this thread | | | Subject | Re: [patch] SCHED_SOFTRR linux scheduler policy ... | From | Alan Cox <> | Date | 13 Jul 2003 12:53:31 +0100 |
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On Sul, 2003-07-13 at 12:50, Pavel Machek wrote: > Hi! > > > I finally found a couple of hours for this and I also found a machine were > > I can run 2.5, since luck abandoned myself about this. The small page > > describe the obvious and contain the trivial patch and the latecy test app : > > > > http://www.xmailserver.org/linux-patches/softrr.html > > What happens if evil user forks 60 processes, marks them all > SCHED_SOFTRR, and tries to starve everyone else?
With the current scheduler you lose. Rik did some playing with a fair share scheduler some time ago. That actually works very well for a lot of these sorts of things. You can nice processes up (but only by penalising your own processes) and conceptually you'd be able to soft real time on a per user basis this way.
Alan
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