Fwd: [PATCH] cifs: add .splice_write

Steve French smfrench at gmail.com
Sun Jan 28 01:33:01 UTC 2018

On Sat, Jan 27, 2018 at 8:31 AM, Jens Axboe <axboe at kernel.dk> wrote:

> On 1/26/18 2:25 PM, Steve French wrote:
> > The patch did look like it improves the performance of file copy from
> > Nautilus when I tried it, but would prefer experimenting tool where I
> > could measure the improvement more precisely.  Is there a good command
> > line tool which generates splice_write indirectly? As expected cp and
> > dd don't seem to be affected by this patch.
> You can use fio with ioengine=splice. Or if you have any sendfile()
> based tools, that should also do the trick, as sendfile() is just
> a wrapper around splice.
makes sense - and "gio copy" also worked



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