Christoph Lameter
331dc558fa
slub: Support 4k kmallocs again to compensate for page allocator slowness ...
Currently we hand off PAGE_SIZEd kmallocs to the page allocator in the
mistaken belief that the page allocator can handle these allocations
effectively. However, measurements indicate a minimum slowdown by the
factor of 8 (and that is only SMP, NUMA is much worse) vs the slub fastpath
which causes regressions in tbench.
Increase the number of kmalloc caches by one so that we again handle 4k
kmallocs directly from slub. 4k page buffering for the page allocator
will be performed by slub like done by slab.
At some point the page allocator fastpath should be fixed. A lot of the kernel
would benefit from a faster ability to allocate a single page. If that is
done then the 4k allocs may again be forwarded to the page allocator and this
patch could be reverted.
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
2008-02-14 15:30:02 -08:00
acpi: fix acpi_os_read_pci_configuration() misuse of raw_pci_read()
2008-02-13 09:56:14 -08:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
Merge branches 'master', 'omap1-upstream' and 'orion' into devel
2008-02-09 22:47:23 +00:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
Add pgtable_t to remaining nommu architectures
2008-02-09 11:08:33 -08:00
Merge branch 'cris' of git://www.jni.nu/cris
2008-02-08 10:01:28 -08:00
Fix FRV cmpxchg_local
2008-02-08 15:33:32 -08:00
Make topology fallback macros reference their arguments.
2008-02-11 20:37:29 -08:00
Add pgtable_t to remaining nommu architectures
2008-02-09 11:08:33 -08:00
[IA64] Fix build for sim_defconfig
2008-02-11 13:23:46 -08:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
m68knommu: add pgtable_t
2008-02-09 11:08:34 -08:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
Final removal of FASTCALL()/fastcall
2008-02-13 16:21:18 -08:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2008-02-08 09:31:42 -08:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
[S390] dynamic page tables.
2008-02-09 18:24:41 +01:00
CONFIG_HIGHPTE vs. sub-page page tables.
2008-02-08 09:22:42 -08:00
[SPARC]: Merge asm-sparc{,64}/a.out.h
2008-02-09 22:25:50 -08:00
[SPARC]: Merge asm-sparc{,64}/a.out.h
2008-02-09 22:25:50 -08:00
uml: x86_64 should copy %fs during fork
2008-02-08 09:22:43 -08:00
Add pgtable_t to remaining nommu architectures
2008-02-09 11:08:33 -08:00
x86: fix sigcontext.h user export
2008-02-13 16:20:35 +01:00
fix xtensa timerfd breakage
2008-02-08 15:33:32 -08:00
slub: Support 4k kmallocs again to compensate for page allocator slowness
2008-02-14 15:30:02 -08:00
include/media/: Spelling fixes
2008-02-03 17:19:47 +02:00
Merge git://git.infradead.org/~dedekind/ubi-2.6
2008-02-03 22:07:40 +11:00
Merge branch 'pending' of master.kernel.org:/pub/scm/linux/kernel/git/vxy/lksctp-dev
2008-02-09 03:44:25 -08:00
pcmcia: replace kio_addr_t with unsigned int everywhere
2008-02-05 09:44:08 -08:00
IB/core: Remove unused struct ib_device.flags member
2008-02-08 14:47:26 -08:00
[SCSI] update SG_ALL to avoid causing chaining
2008-02-11 13:40:13 -06:00
atmel_lcdfb: backlight control
2008-02-06 10:41:16 -08:00
331dc558fa