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17 August 2024, 15:42:30 UTC
Revision 0835ab53eab5bbeebe1c135e92fb0c4d483dde17 authored by Andi Kleen on 23 February 2008, 23:24:02 UTC, committed by Linus Torvalds on 24 February 2008, 01:12:16 UTC 
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>
1 parent 00d6296
History
Tip revision: 0835ab53eab5bbeebe1c135e92fb0c4d483dde17 authored by Andi Kleen on 23 February 2008, 23:24:02 UTC
cgroup memory controller: document huge memory/cache overhead in Kconfig
Tip revision: 0835ab5
File Mode Size
Documentation
arch
block
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
usr
virt
.gitignore -rw-r--r-- 636 bytes
.mailmap -rw-r--r-- 3.6 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 90.4 KB
Kbuild -rw-r--r-- 1.6 KB
MAINTAINERS -rw-r--r-- 94.4 KB
Makefile -rw-r--r-- 52.8 KB
README -rw-r--r-- 16.5 KB
REPORTING-BUGS -rw-r--r-- 3.1 KB

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