On 18/11/2020 15:36, Xiaoguang Wang wrote: >> On 11/18/20 6:59 AM, Pavel Begunkov wrote: >> Ran it through the polled testing which is core limited, and I didn't >> see any changes... > Jens and Pavel, sorry for the noise... Not at all, that's great you're trying all means to improve performance, some are just don't worth the effort. > I also have some tests today, in upstream kernel, I also don't see any changes, > but in our internal 4.19 kernel, I got a steady about 1% iops improvement, and hmm, 1% is actually a good result > our kernel don't include Ming Lei's patch "2b0d3d3e4fcf percpu_ref: reduce memory > footprint of percpu_ref in fast path". -- Pavel Begunkov
