On Mon, Apr 08 2019, kernel test robot wrote: > Greeting, > > FYI, we noticed a -86.0% regression of aim7.jobs-per-min due to commit:
That is expected. The following commit
2bc13b83e6298486371761de503faeffd15b7534
should restore the performance.
NeilBrown
>
>
> commit: 4bc034d35377196c854236133b07730a777c4aba ("Revert "MD: fix lock
> contention for flush bios"")
> https://git.kernel.org/cgit/linux/kernel/git/axboe/linux-block.git
> for-5.2/block
>
> in testcase: aim7
> on test machine: 40 threads Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz with
> 384G memory
> with following parameters:
>
> disk: 4BRD_12G
> md: RAID0
> fs: xfs
> test: sync_disk_rw
> load: 300
> cpufreq_governor: performance
>
> test-description: AIM7 is a traditional UNIX system level benchmark suite
> which is used to test and measure the performance of multiuser system.
> test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/
>
>
signature.asc
Description: PGP signature
