From: Nikolay Borisov <nborisov@suse.com>
To: Wang Yugui <wangyugui@e16-tech.com>, louis@waffle.tech
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH] btrfs: balance RAID1/RAID10 mirror selection
Date: Fri, 23 Oct 2020 10:42:56 +0300 [thread overview]
Message-ID: <d4d600aa-a56b-2458-f504-afbb584f888b@suse.com> (raw)
In-Reply-To: <20201023153814.643F.409509F4@e16-tech.com>
On 23.10.20 г. 10:38 ч., Wang Yugui wrote:
> Hi, Louis Jencka
>
> Can we move 'atomic_t rr_counter' into 'struct btrfs_fs_info' to
> support multiple mounted btrfs filesystem?
>
And introduce constant cache line pings for every read. This thing needs
to be tested under load with perf to see what kind of overhead the
shared atomic_t counter adds. My hunch is this should really be a
per-cpu variable.
<snip>
next prev parent reply other threads:[~2020-10-23 7:43 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-16 5:59 [PATCH] btrfs: balance RAID1/RAID10 mirror selection louis
2020-10-16 7:15 ` Nikolay Borisov
2020-10-16 7:29 ` Qu Wenruo
2020-10-16 17:28 ` louis
2020-10-18 8:16 ` Anand Jain
2020-10-16 16:18 ` louis
2020-10-16 17:21 ` waxhead
2020-10-23 7:38 ` Wang Yugui
2020-10-23 7:42 ` Nikolay Borisov [this message]
2020-11-02 19:29 ` louis
2020-11-02 19:36 ` louis
2020-10-27 14:26 ` Wang Yugui
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