Messages in this thread | | | Date | Sat, 19 Sep 2009 22:15:08 +0200 | From | Felix Fietkau <> | Subject | Re: BFS vs. mainline scheduler benchmarks and measurements |
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Ingo Molnar wrote: > * Felix Fietkau <nbd@openwrt.org> wrote: >> I did some tests with BFS v230 vs CFS on Linux 2.6.30 on a different >> MIPS device (Atheros AR2317) with 180 MHz and 16 MB RAM. When running >> iperf tests, I consistently get the following results when running the >> transfer from the device to my laptop: >> >> CFS: [ 5] 0.0-60.0 sec 107 MBytes 15.0 Mbits/sec >> BFS: [ 5] 0.0-60.0 sec 119 MBytes 16.6 Mbits/sec >> >> The transfer speed from my laptop to the device are the same with BFS >> and CFS. I repeated the tests a few times just to be sure, and I will >> check vmstat later. > > Which exact mainline kernel have you tried? For anything performance > related running latest upstream -git (currently at 202c467) would be > recommended. I used the OpenWrt-patched 2.6.30. Support for the hardware that I tested with hasn't been merged upstream yet. Do you think that the scheduler related changes after 2.6.30 are relevant for non-SMP performance as well? If so, I'll work on a test with latest upstream -git with the necessary patches when I have time for it.
- Felix
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