On Friday 08 September 2017 06:20 PM, Tiwei Bie wrote: > This patch adaptively batches the small guest memory copies. > By batching the small copies, the efficiency of executing the > memory LOAD instructions can be improved greatly, because the > memory LOAD latency can be effectively hidden by the pipeline. > We saw great performance boosts for small packets PVP test. > > This patch improves the performance for small packets, and has > distinguished the packets by size. So although the performance > for big packets doesn't change, it makes it relatively easy to > do some special optimizations for the big packets too. > > Signed-off-by: Tiwei Bie <[email protected]> > Signed-off-by: Zhihong Wang <[email protected]> > Signed-off-by: Zhiyong Yang <[email protected]> > Reviewed-by: Maxime Coquelin <[email protected]> > --- > This optimization depends on the CPU internal pipeline design. > So further tests (e.g. ARM) from the community is appreciated. > > v2: s/burst_copy/batch_copy/g
In pvp setup for arm64 platform, no performance drop noticed with this patch but no significant performance gain either. Tested-by: Santosh Shukla <[email protected]>
