Il 11/02/2014 16:43, Michael S. Tsirkin ha scritto:
> Signed-off-by: Chuanyu Qin <qinchuanyu@xxxxxxxxxx>
Optimization patch without any performance data?
Such a change would need much more testing than that:
would have to try various workloads with -net and -blk at least.
-blk and -scsi never use 2 descriptors except for flushes (which go all
the way to the platters or flash, and are not as frequent as other I/O).
So the patch is in all likelihood a no-op there.
Of course, virtio-net does need data.
Paolo
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