Messages in this thread | | | From | "Huang\, Ying" <> | Subject | Re: [LKP] [btrfs] 302167c50b: fio.write_bw_MBps -12.4% regression | Date | Wed, 08 May 2019 15:56:59 +0800 |
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"Huang, Ying" <ying.huang@intel.com> writes:
> Hi, Josef, > > kernel test robot <rong.a.chen@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
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