linux-kernel - Re: [RFC PATCH] fuse: support splice() reading from fuse device

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Message-ID: <20100520112821.GP25951@kernel.dk>
Date:	Thu, 20 May 2010 13:28:22 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org
Subject: Re: [RFC PATCH] fuse: support splice() reading from fuse device

On Thu, May 20 2010, Miklos Szeredi wrote:
> This continues zero copy I/O support on the fuse interface.  The first
> part of the patchset (splice write support on fuse device) was posted
> here:
> 
>   http://lkml.org/lkml/2010/4/28/215
> 
> With Jens' pipe growing patch and additional fuse patches it was
> possible to achieve a 20GBytes/s write throghput on my laptop in a
> "null" filesystem (no page cache, data goes to /dev/null).

Do you have some numbers on how that compares to the same test with the
default 16 page pipe size?

-- 
Jens Axboe

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