Messages in this thread | | | Date | Tue, 24 Sep 2013 16:37:40 -0700 | From | Andrew Morton <> | Subject | Re: [PATCHv6 00/22] Transparent huge page cache: phase 1, everything but mmap() |
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On Mon, 23 Sep 2013 15:05:28 +0300 "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> wrote:
> It brings thp support for ramfs, but without mmap() -- it will be posted > separately.
We were never going to do this :(
Has anyone reviewed these patches much yet?
> Please review and consider applying.
It appears rather too immature at this stage.
> Intro > ----- > > The goal of the project is preparing kernel infrastructure to handle huge > pages in page cache. > > To proof that the proposed changes are functional we enable the feature > for the most simple file system -- ramfs. ramfs is not that useful by > itself, but it's good pilot project.
At the very least we should get this done for a real filesystem to see how intrusive the changes are and to evaluate the performance changes.
Sigh. A pox on whoever thought up huge pages. Words cannot express how much of a godawful mess they have made of Linux MM. And it hasn't ended yet :( My take is that we'd need to see some very attractive and convincing real-world performance numbers before even thinking of taking this on.
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