From: Phillip Susi <psusi@ubuntu.com>
To: linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: SSHD ( Hybrid drive ) cache pinning
Date: Sun, 16 Nov 2014 21:02:23 -0500 [thread overview]
Message-ID: <5469572F.50809@ubuntu.com> (raw)
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Hybrid hard drives are coming to market ( I will soon have one for
testing ) that use flash to cache the rotating media. While the drive
firmware will attempt to figure out what blocks you frequently access
randomly ( not streaming IO ), and try to cache them in the flash,
ATA8 does add commands to allow the OS to explicitly control what
blocks are cached, and it should be in a better position to know what
should be there than the heuristics in the drive firmware.
Has there been any work done yet ( or even just design ) on
implementing this in linux?
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next reply other threads:[~2014-11-17 2:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-17 2:02 Phillip Susi [this message]
2014-11-17 15:43 ` SSHD ( Hybrid drive ) cache pinning Jeff Moyer
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