From: Hans van Kranenburg <hans@knorrie.org>
To: Leszek Dubiel <leszek@dubiel.pl>, linux-btrfs@vger.kernel.org
Subject: Re: btrfs-transacti -- change from be/4 to idle (?)
Date: Wed, 26 Aug 2020 11:47:47 +0200 [thread overview]
Message-ID: <5ec32698-5f49-e870-75cf-ed82c78140d0@knorrie.org> (raw)
In-Reply-To: <806a0681-6a1b-30d0-de28-8f18019913ad@dubiel.pl>
Hi!
On 8/26/20 10:58 AM, Leszek Dubiel wrote:
>
> Process btrfs-transacti takes 100% CPU time and server get very slow.
Is it slow and not doing much, or is it busy doing things, taking more
time than you would want? Those two things are quite different.
> It runs with priority "best effort be/4".
>
> Is it a good idea to change priority to "idle"?
> root@wawel:/var/log# df -h /
>
> Filesystem Size Used Avail Use% Mounted on
> /dev/sda2 20T 11T 7.7T 58% /
Are you using space_cache=v2 already?
https://events.static.linuxfound.org/sites/events/files/slides/vault2016_0.pdf
> [...]
Hans
prev parent reply other threads:[~2020-08-26 9:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-26 8:58 btrfs-transacti -- change from be/4 to idle (?) Leszek Dubiel
2020-08-26 9:39 ` Qu Wenruo
2020-08-26 12:49 ` Leszek Dubiel
2020-08-26 9:47 ` Hans van Kranenburg [this message]
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