[Bug 177713] Re: 2.6.24-2: Regression with idle cpu cycle handling

dhaval dhaval.giani at gmail.com
Sun Jan 20 03:42:19 UTC 2008


this is not a regression. The CFS has the group scheduling feature
enabled, which is utilized using the Fair User interface. What this
means is that the root has the ability to set the importance of every
user. Those tunables are accessible at /sys/kernel/uids/<uid>/cpu_share.

You can also have udev scripts which can be written as per
http://lkml.org/lkml/2007/10/9/115 .

[By default, root has twice the share of the other user]
[Also this is a propotional bandwidth scheduler. That is if you have two users, giving user A 100 shares and User b 200 shares is the same as giving User A 1000 shares and User B 2000 shares.]

Hope that helps


2.6.24-2: Regression with idle cpu cycle handling
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