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1e9f28fa1e
kernel_optimize_test/arch
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Siddha, Suresh B 1e9f28fa1e [PATCH] sched: new sched domain for representing multi-core 
Add a new sched domain for representing multi-core with shared caches
between cores.  Consider a dual package system, each package containing two
cores and with last level cache shared between cores with in a package.  If
there are two runnable processes, with this appended patch those two
processes will be scheduled on different packages.

On such systems, with this patch we have observed 8% perf improvement with
specJBB(2 warehouse) benchmark and 35% improvement with CFP2000 rate(with 2
users).

This new domain will come into play only on multi-core systems with shared
caches.  On other systems, this sched domain will be removed by domain
degeneration code.  This new domain can be also used for implementing power
savings policy (see OLS 2005 CMP kernel scheduler paper for more details..
I will post another patch for power savings policy soon)

Most of the arch/* file changes are for cpu_coregroup_map() implementation.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 08:44:43 -08:00
..
alpha [PATCH] bitops: alpha: use generic bitops 2006-03-26 08:57:11 -08:00
arm [PATCH] bitops: arm: use generic bitops 2006-03-26 08:57:12 -08:00
arm26 [PATCH] bitops: arm26: use generic bitops 2006-03-26 08:57:12 -08:00
cris [PATCH] bitops: cris: use generic bitops 2006-03-26 08:57:12 -08:00
frv [PATCH] bitops: frv: use generic bitops 2006-03-26 08:57:12 -08:00
h8300 [PATCH] bitops: h8300: use generic bitops 2006-03-26 08:57:12 -08:00
i386 [PATCH] sched: new sched domain for representing multi-core 2006-03-27 08:44:43 -08:00
ia64 [PATCH] bitops: ia64: make partial_page.bitmap an unsigned long 2006-03-26 08:57:15 -08:00
m32r [PATCH] bitops: m32r: use generic bitops 2006-03-26 08:57:12 -08:00
m68k [PATCH] bitops: m68k: use generic bitops 2006-03-26 08:57:12 -08:00
m68knommu [PATCH] bitops: m68knommu: use generic bitops 2006-03-26 08:57:13 -08:00
mips [PATCH] bitops: mips: use generic bitops 2006-03-26 08:57:13 -08:00
parisc [PATCH] bitops: parisc: use generic bitops 2006-03-26 08:57:14 -08:00
powerpc [PATCH] bitops: powerpc: use generic bitops 2006-03-26 08:57:14 -08:00
ppc [PATCH] ppc: fix undefined reference to hweight32 2006-03-26 08:57:13 -08:00
s390 [PATCH] bitops: s390: use generic bitops 2006-03-26 08:57:14 -08:00
sh [PATCH] bitops: sh: use generic bitops 2006-03-26 08:57:14 -08:00
sh64 [PATCH] bitops: sh64: use generic bitops 2006-03-26 08:57:14 -08:00
sparc [PATCH] bitops: sparc: use generic bitops 2006-03-26 08:57:14 -08:00
sparc64 [SPARC64]: Kill duplicate exports of string library functions. 2006-03-26 15:30:29 -08:00
um [PATCH] uml: fix thread startup race 2006-03-27 08:44:38 -08:00
v850 [PATCH] bitops: v850: use generic bitops 2006-03-26 08:57:14 -08:00
x86_64 [PATCH] sched: new sched domain for representing multi-core 2006-03-27 08:44:43 -08:00
xtensa [PATCH] bitops: xtensa: use generic bitops 2006-03-26 08:57:15 -08:00