Re: [REGRESSION] ioprio performance hangs, bisected

[David Wang]

At 2024-12-01 00:00:20, "Jens Axboe" <axboe@xxxxxxxxx> wrote:
>On 11/29/24 11:09 PM, David Wang wrote:
>> Would fix/revert reach 6.13-rc1? I think this regression has
>> significant nagative impact on daily usage. From time to time,
>> my system would *stuck* for seconds, sometimes even when
>>  just `cat` some small file it would take seconds, and once,
>> my desktop failed to resume from a suspend, I had to power cycle the system;
>> Polling /proc/diskstats,  I noticed Block-IO read latency,
>> delta(# of milliseconds spent reading)/delta(# of reads completed),
>> is very high, ~200ms average, and frequently reaches 10s.
>>  (Strangely block-io write latency seems normal.)
>> My bisect also land on this commit, revert or apply this patch would
>> fix it.
>> 
>> Kind of think that 6.13-rc1 would be very unpleseant to use without
>> a fix/revert for this.
>
>The pull including this fix has been sent off to Linus yesterday,
>it should make -rc1.
>
>-- 
>Jens Axboe

Good to know~

Thanks
David