Messages in this thread | | | Date | Fri, 13 Nov 1998 01:48:13 +0100 (CET) | From | Rik van Riel <> | Subject | scheduler bigpatch for 2.1.128 |
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Hi,
within hours of the 2.1.128 release (within 30 minutes of the patch reaching my mailbox) I have put out the 2.1.128 version of my scheduler bigpatch.
features: - adds a SCHED_IDLE class for ultra-low priority processing (can this be used to lock the system? can anyone find a place within the kernel where schedule() is called within a critical region?) - greatly improved interactive response, the system remain useable under triple-digit loads - proper/better/different reporting of process priorities so you have a way of recognizing RT/idle processes from top: - idle: nice = prio = 20 - rt: nice = (-20 - p->rt_priority), prio = 0 - lower latency RT scheduling, through clever and low cost use of multiple runqueues (thanks Richard) - lower overall scheduling overhead, no longer any need to recalculate the priorities of _all_ tasks when the timeslices have run out --> better rc5des performance, up to 3% measured by one brave tester - sysctl tuneable SCHED_IDLE timeslice length
You can get the patch from my home page, as usual.
Have fun,
Rik -- slowly getting used to dvorak kbd layout... +-------------------------------------------------------------------+ | Linux memory management tour guide. H.H.vanRiel@phys.uu.nl | | Scouting Vries cubscout leader. http://www.phys.uu.nl/~riel/ | +-------------------------------------------------------------------+
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