Just thought I'd let you know that CFS is working on the PS3
neutrino boot # dmesg
Using PS3 machine description
Page orders: linear mapping = 24, virtual = 12, io = 12
Starting Linux PPC64 #1 SMP Fri May 18 09:26:38 UTC 2007
-----------------------------------------------------
ppc64_pft_size = 0x14
physicalMemorySize = 0x8000000
ppc64_caches.dcache_line_size = 0x80
ppc64_caches.icache_line_size = 0x80
htab_address = 0x0000000000000000
htab_hash_mask = 0x1fff
-----------------------------------------------------
Linux version 2.6.22-rc1-cfs-v13 (root@localhost) (gcc version 4.1.1
(Gentoo 4.1.1-r3)) #1 SMP Fri May 18 09:26:38 UTC 2007
It feels more responsive but I shall do more testing and see if there
are any real benefits
On 17/05/07, Ingo Molnar <[email protected]> wrote:
i'm pleased to announce release -v13 of the CFS scheduler patchset.
The CFS patch against v2.6.22-rc1, v2.6.21.1 or v2.6.20.10 can be
downloaded from the usual place:
http://people.redhat.com/mingo/cfs-scheduler/
-v13 is a fixes-only release. It fixes a smaller accounting bug, so if
you saw small lags during desktop use under certain workloads then
please re-check that workload under -v13 too. It also tweaks SMP
load-balancing a bit. (Note: the load-balancing artifact reported by
Peter Williams is not a CFS-specific problem and he reproduced it in
v2.6.21 too. Nevertheless -v13 should be less prone to such artifacts.)
I know about no open CFS regression at the moment, so please re-test
-v13 and if you still see any problem please re-report it. Thanks!
Changes since -v12:
- small tweak: made the "fork flow" of reniced tasks zero-sum
- debugging update: /proc/<PID>/sched is now seqfile based and echoing
0 to it clears the maximum-tracking counters.
- more debugging counters
- small rounding fix to make the statistical average of rounding errors
zero
- scale both the runtime limit and the granularity on SMP too, and make
it dependent on HZ
- misc cleanups
As usual, any sort of feedback, bugreport, fix and suggestion is more
than welcome,
Ingo
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