On Mon, Sep 26, 2016 at 02:26:06PM +0800, Huang, Ying wrote: > Hi, Jaegeuk, > > "Huang, Ying" <[email protected]> writes: > > > Jaegeuk Kim <[email protected]> writes: > > > >> Hello, > >> > >> On Sat, Aug 27, 2016 at 10:13:34AM +0800, Fengguang Wu wrote: > >>> Hi Jaegeuk, > >>> > >>> > > >> > - [lkp] [f2fs] b93f771286: aim7.jobs-per-min -81.2% regression > >>> > > >> > > >>> > > >> > The disk is 4 12G ram disk, and setup RAID0 on them via mdadm. > >>> > > >> > The > >>> > > >> > steps for aim7 is, > >>> > > >> > > >>> > > >> > cat > workfile <<EOF > >>> > > >> > FILESIZE: 1M > >>> > > >> > POOLSIZE: 10M > >>> > > >> > 10 sync_disk_rw > >>> > > >> > EOF > >>> > > >> > > >>> > > >> > ( > >>> > > >> > echo $HOSTNAME > >>> > > >> > echo sync_disk_rw > >>> > > >> > > >>> > > >> > echo 1 > >>> > > >> > echo 600 > >>> > > >> > echo 2 > >>> > > >> > echo 600 > >>> > > >> > echo 1 > >>> > > >> > ) | ./multitask -t & > >>> > > >> > >>> > > >> Any update on these 2 regressions? Is the information is enough > >>> > > >> for you > >>> > > >> to reproduce? > >>> > > > > >>> > > > Sorry, I've had no time to dig this due to business travel now. > >>> > > > I'll check that when back to US. > >>> > > > >>> > > Any update? > >>> > > >>> > Sorry, how can I get multitask binary? > >>> > >>> It's part of aim7, which can be downloaded here: > >>> > >>> http://nchc.dl.sourceforge.net/project/aimbench/aim-suite7/Initial%20release/s7110.tar.Z > >> > >> Thank you for the codes. > >> > >> I've run this workload on the latest f2fs and compared performance having > >> without the reported patch. (1TB nvme SSD, 16 cores, 16GB DRAM) > >> Interestingly, I could find slight performance improvement rather than > >> regression. :( > >> Not sure how to reproduce this. > > > > I think the difference lies on disk used. The ramdisk is used in the > > original test, but it appears that your memory is too small to setup the > > RAM disk for test. So it may be impossible for you to reproduce the > > test unless you can find more memory :) > > > > But we can help you to root cause the issue. What additional data do > > you want? perf-profile data before and after the patch? > > Any update to this regression?
Sorry, no. But meanwhile, I've purchased more DRAMs. :) Now I'm with 128GB DRAM. I can configure 64GB as pmem. Is it worth to try the test again? Thanks, > > Best Regards, > Huang, Ying ------------------------------------------------------------------------------ _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
