Messages in this thread | | | Date | Mon, 10 May 1999 22:14:27 +0200 (CEST) | From | Rik van Riel <> | Subject | Re: [patch] new scheduler |
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On Mon, 10 May 1999, Michel LESPINASSE wrote:
> As a side remark, one should note that you do not need to write > malicious programs to observe this limitation of the CPU time > accounting in Linux. I'm working on a realtime video processing > application right now and it is quite hard to time, because of the > time accounting limitations.
This is an area which _can_ be adressed cheaply in the current code. We're already using the TSC counter for scheduling purposes, so why not use it for near-perfect time accounting?
I guess I'll completely give up on my scheduler changes until there's some instrumentation available to measure things. Besides, there are more then enough other things that need to be done (now that the scheduling seems to be good enough in 2.2.8, with only a superfluous reschedule_idle() in schedule_tail()).
Finger me for more details...
cheers,
Rik -- Open Source: you deserve to be in control of your data. +-------------------------------------------------------------------+ | Le Reseau netwerksystemen BV: http://www.reseau.nl/ | | Linux Memory Management site: http://humbolt.geo.uu.nl/Linux-MM/ | | Nederlandse Linux documentatie: http://www.nl.linux.org/ | +-------------------------------------------------------------------+
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