From: Roman Mamedov <rm@romanrm.net>
To: Ferry Toth <ftoth@telfort.nl>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: Give up on bcache?
Date: Tue, 26 Sep 2017 23:33:19 +0500 [thread overview]
Message-ID: <20170926233319.6324764d@natsu> (raw)
In-Reply-To: <oqe0fo$keo$1@blaine.gmane.org>
On Tue, 26 Sep 2017 16:50:00 +0000 (UTC)
Ferry Toth <ftoth@telfort.nl> wrote:
> https://www.phoronix.com/scan.php?page=article&item=linux414-bcache-
> raid&num=2
>
> I think it might be idle hopes to think bcache can be used as a ssd cache
> for btrfs to significantly improve performance..
My personal real-world experience shows that SSD caching -- with lvmcache --
does indeed significantly improve performance of a large Btrfs filesystem with
slowish base storage.
And that article, sadly, only demonstrates once again the general mediocre
quality of Phoronix content: it is an astonishing oversight to not check out
lvmcache in the same setup, to at least try to draw some useful conclusion, is
it Bcache that is strangely deficient, or SSD caching as a general concept
does not work well in the hardware setup utilized.
--
With respect,
Roman
next prev parent reply other threads:[~2017-09-26 18:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-26 16:50 Give up on bcache? Ferry Toth
2017-09-26 18:33 ` Roman Mamedov [this message]
2017-09-26 19:50 ` Kai Krakow
2017-09-26 20:12 ` Adam Borowski
2017-09-26 19:52 ` Austin S. Hemmelgarn
2017-09-26 22:46 ` Ferry Toth
2017-09-27 12:08 ` Austin S. Hemmelgarn
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