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

On Fri, 2006-09-15 at 12:49 +0400, Kirill Korotaev wrote:
<snip>

Reserving in advance means that sometimes you won't be able to start a
new group without taking back some of reserved pages. This is ... strange.


I do not see it strange. At the time of creation, user sees the failure
(that there isn't enough resource to provide the required/requested
guarantee) and can act accordingly.

BTW, VMware does it this way.
This is not true at least for ESX server.

Hmm, from what I have seen, in ESX server, creation of a VM will fail,
if the specified guarantees cannot meet at the time of creation.

It overcommits memory and does dirty tricks like balooning to free memory then.

This is how they handle over commit, which is not what I was talking
about.

<snip>

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Chandra Seetharaman | Be careful what you choose....
- sekharan@xxxxxxxxxx | .......you may get it.
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