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From: Akira Hayakawa <ruby.wktk@gmail.com>
To: dm-devel@redhat.com
Cc: linux-kernel@vger.kernel.org, masami.hiramatsu@gmail.com,
	devel@etsukata.com
Subject: Re: dm-writeboost: Progress Report
Date: Fri, 23 May 2014 22:14:42 +0900	[thread overview]
Message-ID: <537F49C2.3000304@gmail.com> (raw)
In-Reply-To: <537775B0.2060907@gmail.com>

Hi Guys,

This progress report includes very important benchmarking results, which shows
i) Write will always improve - It boosts writes (396% in the best case) even with really small cache (say, 64MB) because of the sophisticated writeback optimization.
ii) Read won't be bad - It doesn't so much deteriorate the read (less than 1% for SSD+HDD case) because of the insignificant overhead.
iii) Good in application workloads - 22% improvement with read-intensive workload and 234-299% improvement with fileserver workload (using dbench)

Yeah, merging Writeboost into the mainline is my goal now and I really need your feedbacks.
For more details, please read the previous post.

Cheers,
- Akira

  reply	other threads:[~2014-05-23 13:14 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-17 14:44 dm-writeboost: Progress Report Akira Hayakawa
2014-05-23 13:14 ` Akira Hayakawa [this message]
  -- strict thread matches above, loose matches on Subject: below --
2013-11-04  5:17 Akira Hayakawa
2013-11-17 11:23 ` Akira Hayakawa

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