Re: [PATCH 6.4 800/800] io_uring: Use io_schedule* in cqring wait

[Genes Lists]

On 7/23/23 06:50, Greg Kroah-Hartman wrote:
> On Sun, Jul 23, 2023 at 11:39:42AM +0200, Oleksandr Natalenko wrote:
> > Hello.
> >
> > On neděle 16. července 2023 21:50:53 CEST Greg Kroah-Hartman wrote:
> > > From: Andres Freund <andres@xxxxxxxxxxx>
> > >
> > > commit 8a796565cec3601071cbbd27d6304e202019d014 upstream.
> > >
> > > I observed poor performance of io_uring compared to synchronous IO. That
...
> > Reportedly, this caused a regression as reported in [1] [2] [3]. Not only v6.4.4 is affected, v6.1.39 is affected too.
> >
> > Reverting this commit fixes the issue.
> >
> > Please check.
>
> Is this also an issue in 6.5-rc2?
>
> thanks,
>
> greg k-h

Yes - I can confirm this issue is in 6.5-rc2 and with Linus' commit 
c2782531397f5cb19ca3f8f9c17727f1cdf5bee8.


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