On 7/19/2022 12:27 AM, Jens Axboe wrote: > On 7/17/22 9:30 PM, Yin Fengwei wrote: >> Hi Jens, >> >> On 7/15/2022 11:58 PM, Jens Axboe wrote: >>> In terms of making this more obvious, does the below also fix it for >>> you? >> >> The regression is still there after applied the change you posted. > > Still don't see the regression here, using ext4. I get about 1020-1045 > IOPS with or without the patch you sent. > > This is running it in a vm, and the storage device is nvme. What is > hosting your ext4 fs? > My local testing system is also a vm with SATA disk. LKP test platform is a native one with SATA disk. I could reproduce the regression on both environment. I will try to use nvme to host my local vm disk and check whether we could see something different. Regards Yin, Fengwei
