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From: "Linux regression tracking (Thorsten Leemhuis)"  <>
To: Paolo Valente <>, Jens Axboe <>
Cc: Josef Bacik <>,
	David Sterba <>, Chris Mason <>,
	linux-btrfs <>,
	LKML <>,
	Wyatt Childers <>,,
	Linux regressions mailing list <>,
Subject: Re: [Regression] Bug 216961 - Severe IO scheduling starvation issues with btrfs
Date: Wed, 1 Mar 2023 08:34:23 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 28.02.23 20:40, David Sterba wrote:
> On Fri, Feb 17, 2023 at 06:17:58AM +0100, Linux regression tracking (Thorsten Leemhuis) wrote:
>> On 16.02.23 23:39, Josef Bacik wrote:
>>> On Thu, Feb 16, 2023 at 12:43 PM Thorsten Leemhuis
>>> <> wrote:
>>>> I might be missing something, but it looks like the report was ignored.
>>>> Is there a reason for that?
>>> Mostly just being blind.
>> Happens.
>>>  I've responded to the BZ, I'll investigate
>>> through the BZ.
> According to the bug it's a problem in BFQ.

Yeah, I noticed yesterday, after I looked into the issue again, as it
looked stalled. But as I already wrote in a comment in the ticket

Did anyone tell the bfq developers about this?

Doesn't look like it. Adding them to the list of recipients them now,
even if they might know about it. If not:

Paolo, Jens, there seems to be a regression in BFQ likely introduced
between 5.19 and 6.0 that people apparently notice often with Btrfs. For
details see:

Josef apparently has seen report about this as well where switching to
another io scheduler helped:

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
Everything you wanna know about Linux kernel regression tracking:
If I did something stupid, please tell me, as explained on that page.

#regzbot title: bfq: severe IO scheduling starvation issues with btrfs

      reply	other threads:[~2023-03-01  7:34 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-26 11:17 [Regression] Bug 216961 - Severe IO scheduling starvation issues with btrfs Linux kernel regression tracking (Thorsten Leemhuis)
2023-02-16 17:43 ` Thorsten Leemhuis
2023-02-16 22:39   ` Josef Bacik
2023-02-17  5:17     ` Linux regression tracking (Thorsten Leemhuis)
2023-02-28 19:40       ` David Sterba
2023-03-01  7:34         ` Linux regression tracking (Thorsten Leemhuis) [this message]

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