Messages in this thread |  | | Date | Mon, 23 Jan 2012 11:38:08 -0800 (PST) | | From | Hugh Dickins <> | | Subject | Re: Transparent huge pages and shmem? |
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On Mon, 23 Jan 2012, Borzenkov, Andrey wrote:
> In case of THP enabled kernel - will THP be used for SysV shmem? > The obvious target is to avoid pre-allocation of huge pages pool > for databases like Oracle that is required today.
It will one day, yes. Various people are very interested in THP on tmpfs/shmem, which serves SysV shm. But at present THP is limited to private anonymous pages, and its extension to shared file pages is not trivial. I have not heard of anyone making significant progress on that as yet - but perhaps someone is working on it behind the scenes.
Hugh
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