All of lore.kernel.org
 help / color / mirror / Atom feed
From: Marc Lehmann <schmorp@schmorp.de>
To: Roman Mamedov <rm@romanrm.net>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: cpu bound I/O behaviour in linux 5.4 (possibly others)
Date: Fri, 14 Feb 2020 13:45:59 +0100	[thread overview]
Message-ID: <20200214124554.GB7686@schmorp.de> (raw)
In-Reply-To: <20200214173654.394c1c7d@natsu>

On Fri, Feb 14, 2020 at 05:36:54PM +0500, Roman Mamedov <rm@romanrm.net> wrote:
> 
> You don't seem to mention which version you upgraded from. If a full bisect is
> impractical, this is the (very distant) next best thing you can do. Was it from
> 5.14.14, or from 3.4? :)

It was 5.2.21, and before that, 4.19. I might be able to do this, but it's
not something that I can quickly do to test this out.

> Also would be nice if you can double-check that returning to that previous
> version right now makes the issue go away, and it's not a coincidence of
> something else changed on the FS or OS (such as other package upgrades beside
> the kernel).

Would have done so, if I could easily do that. In the meantime, it's a
definite possibility that this is not actually something new, but only
something that recently manifested due to different I/O patterns.

-- 
                The choice of a       Deliantra, the free code+content MORPG
      -----==-     _GNU_              http://www.deliantra.net
      ----==-- _       generation
      ---==---(_)__  __ ____  __      Marc Lehmann
      --==---/ / _ \/ // /\ \/ /      schmorp@schmorp.de
      -=====/_/_//_/\_,_/ /_/\_\

      reply	other threads:[~2020-02-14 13:08 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-14 11:30 cpu bound I/O behaviour in linux 5.4 (possibly others) Marc Lehmann
2020-02-14 11:57 ` Nikolay Borisov
2020-02-14 12:20   ` Filipe Manana
2020-02-14 20:07     ` Marc Lehmann
2020-02-14 12:40   ` Marc Lehmann
2020-02-14 12:36 ` Roman Mamedov
2020-02-14 12:45   ` Marc Lehmann [this message]

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=20200214124554.GB7686@schmorp.de \
    --to=schmorp@schmorp.de \
    --cc=linux-btrfs@vger.kernel.org \
    --cc=rm@romanrm.net \
    /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.