Message-ID: <548AB6E4.2020302@gmail.com>
Date: Fri, 12 Dec 2014 18:35:32 +0900
From: Akira Hayakawa <ruby.wktk@gmail.com>
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To: bvanassche@acm.org
CC: snitzer@redhat.com, gregkh@linuxfoundation.org,
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Subject: Re: [dm-devel] [PATCH v2] staging: writeboost: Add dm-writeboost
References: <54883195.1060304@gmail.com> <20141211152626.GA8196@redhat.com> <548A39E7.80508@gmail.com> <548AB172.4000103@acm.org>
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On 12/12/14 6:12 PM, Bart Van Assche wrote:
> This is the first time I see someone claiming that reducing the request size improves performance. I don't know any SSD model for which splitting requests improves performance.

Writeboost batches number of writes into a log (that is 512KB large) and submits to SSD
which maximizes the throughput and the lifetime of the SSD.
I think you fairly misunderstand how Writeboost works.

- Akira
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