[Devel] Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory)

Chandra Seetharaman sekharan at us.ibm.com
Mon Sep 18 16:57:44 PDT 2006


On Fri, 2006-09-15 at 12:57 +0400, Kirill Korotaev wrote:
> > CKRM/RG handles it this way:
> > 
> > Amount of a resource a child RG gets is the ratio of its share value to
> > the parent's total # of shares. Children's resource allocation can be
> > changed just by changing the parent's total # of shares.
> > 
> > If you case about initial situation would be:
> >   Total memory in the system 100MB 
> >   parent's total # of shares: 100 (1 share == 1MB)
> >   10 children with # of shares: 10 (i.e each children has 10MB)
> > 
> > When I want to add another child, just change parent's total # of shares
> > to be say 125:
> >   Total memory in the system 100MB
> >   parent's total # of shares: 125 (1 share == 0.8MB)
> >   10 children with # of shares: 10 (i.e each children has 8MB)
> > Now you are left with 25 shares (or 20MB) that you can assign to new
> > child(ren) as you please.
> 
> setting memory in "shares" doesn't look user friendly at all...

in RG, the user can set the root level shares to be the "total # of
pages", and then the shares will simply reflect the number of pages.

> 
> Kirill
> 
> 
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    Chandra Seetharaman               | Be careful what you choose....
              - sekharan at us.ibm.com   |      .......you may get it.
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