Messages in this thread |  | | Date | Mon, 11 Sep 2006 18:34:28 +0530 | From | Srivatsa Vaddagiri <> | Subject | Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory) |
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On Mon, Sep 11, 2006 at 11:02:06AM +0400, Pavel Emelianov wrote: > Sure. At the beginning I have one task with one BC. Then > 1. A thread is spawned and new BC is created;
Why do we have to create a BC for every new thread? A new BC is needed for every new service level instead IMO. And typically there wont be unlimited service levels.
> 2. New thread touches a new page (e.g. maps a new file) which is charged > to new BC > (and this means that this BC's must stay in memory till page is > uncharged); > 3. Thread exits after serving the request, but since it's mm is shared > with parent > all the touched pages stay resident and, thus, the new BC is still > pinned in memory. > Steps 1-3 are done multiple times for new pages (new files). > Remember that we're discussing the case when pages are not recharged.
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