AcoSail/kernel_optimize_test
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529a340402
kernel_optimize_test/arch
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Eric Dumazet 529a340402 [PATCH] x86_64: Optimize NUMA node hash function 
Compute the highest possible value for memnode_shift, in order to reduce
footprint of memnodemap[] to the minimum, thus making all users
(phys_to_nid(), kfree()), more cache friendly.

Before the patch :

 Node 0 MemBase 0000000000000000 Limit 00000001ffffffff
 Node 1 MemBase 0000000200000000 Limit 00000003ffffffff
 Using 23 for the hash shift. Max adder is 3ffffffff

After the patch :

 Node 0 MemBase 0000000000000000 Limit 00000001ffffffff
 Node 1 MemBase 0000000200000000 Limit 00000003ffffffff
 Using 33 for the hash shift.

In this case, only 2 bytes of memnodemap[] are used, instead of 2048

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-14 19:55:15 -08:00
..
alpha [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
arm [PATCH] ARM: Reverted 2918/1: [update] Base port of Comdial MP1000 platfrom 2005-11-04 17:28:34 +00:00
arm26 [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
cris [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
frv [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
h8300 [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
i386 [PATCH] x86_64: Unmap NULL during early bootup 2005-11-14 19:55:14 -08:00
ia64 [PATCH] x86_64: Set compatibility flag for 4GB zone on IA64 2005-11-14 19:55:13 -08:00
m32r Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel 2005-10-31 07:32:56 -08:00
m68k [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
m68knommu [PATCH] m68knommu: updated defconfig 2005-11-01 21:41:19 -08:00
mips Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel 2005-10-31 07:32:56 -08:00
parisc [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
powerpc Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc-merge 2005-11-04 16:27:50 -08:00
ppc powerpc: Merge smp.c and smp.h 2005-11-05 10:33:55 +11:00
ppc64 powerpc: Merge smp.c and smp.h 2005-11-05 10:33:55 +11:00
s390 [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
sh Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel 2005-10-31 07:32:56 -08:00
sh64 [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
sparc [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
sparc64 [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
um [PATCH] missing platform_device.h includes 2005-11-01 21:50:01 -08:00
v850 [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
x86_64 [PATCH] x86_64: Optimize NUMA node hash function 2005-11-14 19:55:15 -08:00
xtensa Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel 2005-10-31 07:32:56 -08:00