From: Dave Chinner <david@fromorbit.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: lsf-pc@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [LSF/MM TOPIC] Congestion
Date: Sat, 4 Jan 2020 20:09:55 +1100 [thread overview]
Message-ID: <20200104090955.GF23195@dread.disaster.area> (raw)
In-Reply-To: <20191231125908.GD6788@bombadil.infradead.org>
On Tue, Dec 31, 2019 at 04:59:08AM -0800, Matthew Wilcox wrote:
>
> I don't want to present this topic; I merely noticed the problem.
> I nominate Jens Axboe and Michael Hocko as session leaders. See the
> thread here:
>
> https://lore.kernel.org/linux-mm/20190923111900.GH15392@bombadil.infradead.org/
>
> Summary: Congestion is broken and has been for years, and everybody's
> system is sleeping waiting for congestion that will never clear.
Another symptom: system does not sleep because there is no recorded
congestion so it doesn't back off when it should (the
wait_iff_congested() backoff case).
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
next prev parent reply other threads:[~2020-01-04 9:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-31 12:59 [LSF/MM TOPIC] Congestion Matthew Wilcox
2020-01-04 9:09 ` Dave Chinner [this message]
2020-01-06 11:55 ` [Lsf-pc] " Michal Hocko
2020-01-06 23:21 ` Dave Chinner
2020-01-07 8:23 ` Chris Murphy
2020-01-07 11:53 ` Michal Hocko
2020-01-07 20:12 ` Chris Murphy
2020-01-07 11:53 ` Michal Hocko
2020-01-09 11:07 ` Jan Kara
2020-01-09 23:00 ` Dave Chinner
2020-02-05 16:05 ` Mel Gorman
2020-02-06 23:19 ` Dave Chinner
2020-02-07 0:08 ` Matthew Wilcox
2020-02-13 3:18 ` Andrew Morton
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