From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id B296460032A for ; Thu, 20 May 2010 07:28:27 -0400 (EDT) Date: Thu, 20 May 2010 13:28:22 +0200 From: Jens Axboe Subject: Re: [RFC PATCH] fuse: support splice() reading from fuse device Message-ID: <20100520112821.GP25951@kernel.dk> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Miklos Szeredi Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, torvalds@linux-foundation.org List-ID: 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org