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? -- Jens Axboe