Messages in this thread | | | Date | Thu, 22 May 2008 18:17:37 -0600 | From | "Chris Friesen" <> | Subject | Re: fair group scheduler not so fair? |
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Peter Zijlstra wrote:
> Given the following: > > root > / | \ > _A_ 1 2 > /| |\ > 3 4 5 B > / \ > 6 7 > > CPU0 CPU1 > root root > / \ / \ > A 1 A 2 > / \ / \ > 4 B 3 5 > / \ > 6 7
How do you move specific groups to different cpus. Is this simply using cpusets?
> > Numerical examples given the above scenario, assuming every body's > weight is 1024:
> s_(0,A) = s_(1,A) = 512
Just to make sure I understand what's going on...this is half of 1024 because it shows up on both cpus?
> s_(0,B) = 1024, s_(1,B) = 0
This gets the full 1024 because it's only on one cpu.
> rw_(0,A) = rw(1,A) = 2048 > rw_(0,B) = 2048, rw_(1,B) = 0
How do we get 2048? Shouldn't this be 1024?
> h_load_(0,A) = h_load_(1,A) = 512 > h_load_(0,B) = 256, h_load(1,B) = 0
At this point the numbers make sense, but I'm not sure how the formula for h_load_ works given that I'm not sure what's going on for rw_.
Chris
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