Re: 2.6.21-rc6 new aops patchset

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On Thu, Apr 12, 2007 at 07:05:02PM +0200, Miklos Szeredi wrote:
> > Did some performance testing of the fuse_perform_write implementation.
> > Result with a passthrough filesystem onto a backing tmpfs directory is that
> > bulk (1MB) writes are nearly 4 times faster (256MB/s vs 71MB/s), because
> > FUSE can send larger requests to userspace. Block based filesystems will
> > tend to be less dramatic, but could still be significant if block allocation
> > is batched, for example.
> 
> Thanks a bunch, this is great news.  Large writes are one of the most
> requested features for fuse.  I did have a patch that does this in
> prepare_write/commit_write, but it's rather hackish, and I'm glad
> there will be a better way.

Oh, that's good to know it will actually be useful ;) I didn't actually
instrument request sizes going down, but it that number might be increased
further by increasing the max pages per fuse request.

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