|From:||Con Kolivas <firstname.lastname@example.org>|
|Subject:||[ANNOUNCE] BFS CPU scheduler v0.414 for linux-3.1|
|Date:||Thu, 03 Nov 2011 16:45:02 +1100|
This is to announce a resync of the BFS CPU scheduler for the latest linux kernel. http://ck.kolivas.org/patches/bfs/3.1.0/3.1-sched-bfs-414... A single shared runqueue O(n) strict fairness, deterministic, earliest effective virtual deadline first design. Excellent throughput and latency for 1 to many CPUs on desktop and server commodity hardware. Not recommended for 4096 cpus. Scalability is optimal when your workload is equal to the number of CPUs on bfs. ie you should ONLY do make -j4 on quad core, -j2 on dual core and so on. Features SCHED_IDLEPRIO and SCHED_ISO scheduling policies as well. You do NOT need to use these policies for good performance, they are purely optional for even better performance in extreme conditions. To run something idleprio, use schedtool like so: schedtool -D -e make -j4 To run something isoprio, use schedtool like so: schedtool -I -e amarok Includes accurate sub-tick accounting of tasks so userspace reported cpu usage may be very different if you have very short lived tasks. Enjoy. -- -ck -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to email@example.com More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Copyright © 2011, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds