Re: [LKP] Re: [io_uring] 584b0180f0: phoronix-test-suite.fio.SequentialWrite.IO_uring.Yes.Yes.1MB.DefaultTestDirectory.mb_s -10.2% regression

[Yin Fengwei]

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