Re: [LSF/MM/BPF TOPIC] ublk & io_uring: ublk zero copy support

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On Fri, May 05, 2023 at 09:57:47PM +0000, Bernd Schubert wrote:
> Hi Ming,
> 
> On 4/29/23 04:18, Ming Lei wrote:
> > Hello,
> > 
> > ublk zero copy is observed to improve big chunk(64KB+) sequential IO performance a
> > lot, such as, IOPS of ublk-loop over tmpfs is increased by 1~2X[1], Jens also observed
> > that IOPS of ublk-qcow2 can be increased by ~1X[2]. Meantime it saves memory bandwidth.
> > 
> > So this is one important performance improvement.
> > 
> > So far there are three proposal:
> 
> looks like there is no dedicated session. Could we still have a 
> discussion in a free slot, if possible?

Sure, and we can invite Pavel to the talk too if he is in this lsfmm.


thanks,
Ming




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