From: Sergei Trofimovich <slyich@gmail.com>
To: "Szőts Ákos" <szotsaki@gmail.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: systemd "journalctl" is 1.89sec on ext4, 1.49 min on btrfs
Date: Mon, 27 May 2013 20:47:23 +0300 [thread overview]
Message-ID: <20130527204723.573c4e3f@sf> (raw)
In-Reply-To: <16735484.PAleCPYpY8@noname>
[-- Attachment #1: Type: text/plain, Size: 942 bytes --]
On Mon, 27 May 2013 18:21:21 +0200
Szőts Ákos <szotsaki@gmail.com> wrote:
> Dear list,
>
> I have two openSUSE 12.3 systems with kernel 3.9. On one of them there's an
> ext4 partition, while on the other there's a btrfs.
>
> I issued a "time journalctl -b --no-pager" command on both systems. This shows
> the logs from the current boot without passing them to "less".
>
> On ext4 (3.9.3):
> real 0m1.898s
> user 0m0.291s
> sys 0m0.105s
>
> On btrfs (3.9.2):
> real 1m49.698s
> user 0m0.102s
> sys 0m0.470s
>
> Journalctl on btrfs was always this slow, some btrfsck were made on the file
> system too, but I don't think it was corrupted. On just the first run it's
> sluggish, after it's fast as the ext4 one.
>
> Is it a known issue or can I help somehow debugging this further?
Let's look at your
/usr/sbin/filefrag /var/log/journal/*/*
on both systems
--
Sergei
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 198 bytes --]
next prev parent reply other threads:[~2013-05-27 17:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-27 16:21 systemd "journalctl" is 1.89sec on ext4, 1.49 min on btrfs Szőts Ákos
[not found] ` <CAFvQSYTtuH99nqMb6589xJgwsrSG6fD02XzU3ji=dSmJokMxTw@mail.gmail.com>
2013-05-27 16:36 ` Clemens Eisserer
2013-05-27 16:42 ` George Mitchell
2013-05-27 17:47 ` Sergei Trofimovich [this message]
2013-05-27 22:00 ` Szőts Ákos
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=20130527204723.573c4e3f@sf \
--to=slyich@gmail.com \
--cc=linux-btrfs@vger.kernel.org \
--cc=szotsaki@gmail.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).