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authorDhaval Giani <dhaval@linux.vnet.ibm.com>2007-12-12 11:18:59 +0530
committerGreg Kroah-Hartman <gregkh@suse.de>2007-12-17 10:33:19 -0800
commit0594fe069df5a10686a3b923b36a0e7a6aed2393 (patch)
treed9d465951c8895b1a570dff6b063a668e8da93be /Documentation/ABI
parente11d044efdd2e5c837c4d470fc447b49a9aebfe1 (diff)
Add Documentation for FAIR_USER_SCHED sysfs files
This patch adds documentation about /sys/kernel/uids/<uid>/cpu_share to Documentation/ABI. Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-uids14
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-uids b/Documentation/ABI/testing/sysfs-kernel-uids
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+What: /sys/kernel/uids/<uid>/cpu_shares
+Date: December 2007
+Contact: Dhaval Giani <dhaval@linux.vnet.ibm.com>
+ Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
+Description:
+ The /sys/kernel/uids/<uid>/cpu_shares tunable is used
+ to set the cpu bandwidth a user is allowed. This is a
+ propotional value. What that means is that if there
+ are two users logged in, each with an equal number of
+ shares, then they will get equal CPU bandwidth. Another
+ example would be, if User A has shares = 1024 and user
+ B has shares = 2048, User B will get twice the CPU
+ bandwidth user A will. For more details refer
+ Documentation/sched-design-CFS.txt