Messages in this thread | | | From | "Huang\, Ying" <> | Subject | Re: [LKP] [btrfs] 302167c50b: fio.write_bw_MBps -12.4% regression | Date | Fri, 26 Apr 2019 14:14:11 +0800 |
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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?
Best Regards, Huang, Ying
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