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author | Andi Kleen <andi@firstfloor.org> | 2008-02-23 23:24:02 (GMT) |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-24 01:12:16 (GMT) |
commit | 0835ab53eab5bbeebe1c135e92fb0c4d483dde17 (patch) | |
tree | 037ce3a4885d46cfba34a4265bead1d081d2814b /security/smack | |
parent | 00d6296145c6b671a9886e380efc24f2731d856a (diff) | |
download | linux-fsl-qoriq-0835ab53eab5bbeebe1c135e92fb0c4d483dde17.tar.xz |
cgroup memory controller: document huge memory/cache overhead in Kconfig
Document huge memory/cache overhead of memory controller in Kconfig
I was a little surprised that 2.6.25-rc* increased struct page for the
memory controller. At least on many x86-64 machines it will not fit into a
single cache line now anymore and also costs considerable amounts of RAM.
At earlier review I remembered asking for a external data structure for
this.
It's also quite unobvious that a innocent looking Kconfig option with a
single line Kconfig description has such a negative effect.
This patch attempts to document these disadvantages at least so that users
configuring their kernel can make a informed decision.
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Balbir Singh <balbir@in.ibm.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/smack')
0 files changed, 0 insertions, 0 deletions