"Huang, Ying" <ying.hu...@intel.com> writes: > Hi, Josef, > > kernel test robot <rong.a.c...@intel.com> writes: > >> Greeting, >> >> FYI, we noticed a -12.4% regression of fio.write_bw_MBps due to commit: >> >> >> commit: 302167c50b32e7fccc98994a91d40ddbbab04e52 ("btrfs: don't end the >> transaction for delayed refs in throttle") >> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git >> pending-fixes >> >> in testcase: fio-basic >> on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with >> 64G memory >> with following parameters: >> >> runtime: 300s >> nr_task: 8t >> disk: 1SSD >> fs: btrfs >> rw: randwrite >> bs: 4k >> ioengine: sync >> test_size: 400g >> cpufreq_governor: performance >> ucode: 0xb00002e >> >> test-description: Fio is a tool that will spawn a number of threads or >> processes doing a particular type of I/O action as specified by the user. >> test-url: https://github.com/axboe/fio >> >> > > Do you have time to take a look at this regression?
Ping Best Regards, Huang, Ying