From: Remi Gauvin <remi@georgianit.com>
To: Zygo Blaxell <ce3g8jdj@umail.furryterror.org>
Cc: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Btrfs autodefrag wrote 5TB in one day to a 0.5TB SSD without a measurable benefit
Date: Tue, 15 Mar 2022 10:14:01 -0400 [thread overview]
Message-ID: <eda21cae-4825-458a-dd69-1e2740955dc0@georgianit.com> (raw)
In-Reply-To: <Yi/SR7CNbtDvIsPn@hungrycats.org>
On 2022-03-14 7:39 p.m., Zygo Blaxell wrote:
>
> If we're adding a mount option for this (I'm not opposed to it, I'm
> pointing out that it's not the first tool to reach for), then ideally
> we'd overload it for the compressed batch size (currently hardcoded
> at 512K).
Are there any advantages to extents larger than 256K on ssd Media? Even
if a much needed garbage collection process were to be created, the
smaller extents would mean less data would need to be re-written, (and
potentially duplicated due to snapshots and ref copies.)
The fine details on how to implement all of this is way over my head,
but it seemed to me like the logic to keep the extents small is already
more or less already there, and would need relatively very little work
to manifest.
next prev parent reply other threads:[~2022-03-15 14:14 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-06 15:59 Btrfs autodefrag wrote 5TB in one day to a 0.5TB SSD without a measurable benefit Jan Ziak
2022-03-07 0:48 ` Qu Wenruo
2022-03-07 2:23 ` Jan Ziak
2022-03-07 2:39 ` Qu Wenruo
2022-03-07 7:31 ` Qu Wenruo
2022-03-10 1:10 ` Jan Ziak
2022-03-10 1:26 ` Qu Wenruo
2022-03-10 4:33 ` Jan Ziak
2022-03-10 6:42 ` Qu Wenruo
2022-03-10 21:31 ` Jan Ziak
2022-03-10 23:27 ` Qu Wenruo
2022-03-11 2:42 ` Jan Ziak
2022-03-11 2:59 ` Qu Wenruo
2022-03-11 5:04 ` Jan Ziak
2022-03-11 16:31 ` Jan Ziak
2022-03-11 20:02 ` Jan Ziak
2022-03-11 23:04 ` Qu Wenruo
2022-03-11 23:28 ` Jan Ziak
2022-03-11 23:39 ` Qu Wenruo
2022-03-12 0:01 ` Jan Ziak
2022-03-12 0:15 ` Qu Wenruo
2022-03-12 3:16 ` Zygo Blaxell
2022-03-12 2:43 ` Zygo Blaxell
2022-03-12 3:24 ` Qu Wenruo
2022-03-12 3:48 ` Zygo Blaxell
2022-03-14 20:09 ` Phillip Susi
2022-03-14 22:59 ` Zygo Blaxell
2022-03-15 18:28 ` Phillip Susi
2022-03-15 19:28 ` Jan Ziak
2022-03-15 21:06 ` Zygo Blaxell
2022-03-15 22:20 ` Jan Ziak
2022-03-16 17:02 ` Zygo Blaxell
2022-03-16 17:48 ` Jan Ziak
2022-03-17 2:11 ` Zygo Blaxell
2022-03-16 18:46 ` Phillip Susi
2022-03-16 19:59 ` Zygo Blaxell
2022-03-20 17:50 ` Forza
2022-03-20 21:15 ` Zygo Blaxell
2022-03-08 21:57 ` Jan Ziak
2022-03-08 23:40 ` Qu Wenruo
2022-03-09 22:22 ` Jan Ziak
2022-03-09 22:44 ` Qu Wenruo
2022-03-09 22:55 ` Jan Ziak
2022-03-09 23:00 ` Jan Ziak
2022-03-09 4:48 ` Zygo Blaxell
2022-03-07 14:30 ` Phillip Susi
2022-03-08 21:43 ` Jan Ziak
2022-03-09 18:46 ` Phillip Susi
2022-03-09 21:35 ` Jan Ziak
2022-03-14 20:02 ` Phillip Susi
2022-03-14 21:53 ` Jan Ziak
2022-03-14 22:24 ` Remi Gauvin
2022-03-14 22:51 ` Zygo Blaxell
2022-03-14 23:07 ` Remi Gauvin
2022-03-14 23:39 ` Zygo Blaxell
2022-03-15 14:14 ` Remi Gauvin [this message]
2022-03-15 18:51 ` Zygo Blaxell
2022-03-15 19:22 ` Remi Gauvin
2022-03-15 21:08 ` Zygo Blaxell
2022-03-15 18:15 ` Phillip Susi
2022-03-16 16:52 ` Andrei Borzenkov
2022-03-16 18:28 ` Jan Ziak
2022-03-16 18:31 ` Phillip Susi
2022-03-16 18:43 ` Andrei Borzenkov
2022-03-16 18:46 ` Jan Ziak
2022-03-16 19:04 ` Zygo Blaxell
2022-03-17 20:34 ` Phillip Susi
2022-03-17 22:06 ` Zygo Blaxell
2022-03-16 12:47 ` Kai Krakow
2022-03-16 18:18 ` Jan Ziak
-- strict thread matches above, loose matches on Subject: below --
2022-06-17 0:20 Jan Ziak
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