From: Roman Mamedov <rm@romanrm.net>
To: Tomasz Chmielewski <tch@virtall.com>
Cc: Nikolay Borisov <nborisov@suse.com>,
Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: btrfs-cleaner 100% busy on an idle filesystem with 4.19.3
Date: Thu, 22 Nov 2018 19:03:07 +0500 [thread overview]
Message-ID: <20181122190307.45b10248@natsu> (raw)
In-Reply-To: <0df02574bdf0fb676cee7b5a3d1890e3@virtall.com>
On Thu, 22 Nov 2018 22:07:25 +0900
Tomasz Chmielewski <tch@virtall.com> wrote:
> Spot on!
>
> Removed "discard" from fstab and added "ssd", rebooted - no more
> btrfs-cleaner running.
Recently there has been a bugfix for TRIM in Btrfs:
btrfs: Ensure btrfs_trim_fs can trim the whole fs
https://patchwork.kernel.org/patch/10579539/
Perhaps your upgraded kernel is the first one to contain it, and for the first
time you're seeing TRIM to actually *work*, with the actual performance impact
of it on a large fragmented FS, instead of a few contiguous unallocated areas.
--
With respect,
Roman
next prev parent reply other threads:[~2018-11-22 14:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-22 12:31 btrfs-cleaner 100% busy on an idle filesystem with 4.19.3 Tomasz Chmielewski
2018-11-22 12:46 ` Nikolay Borisov
2018-11-22 13:07 ` Tomasz Chmielewski
2018-11-22 14:03 ` Roman Mamedov [this message]
2018-11-22 14:13 ` Qu Wenruo
2018-11-23 6:47 ` Chris Murphy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181122190307.45b10248@natsu \
--to=rm@romanrm.net \
--cc=linux-btrfs@vger.kernel.org \
--cc=nborisov@suse.com \
--cc=tch@virtall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.