Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760829AbZDCIff (ORCPT ); Fri, 3 Apr 2009 04:35:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752780AbZDCIfR (ORCPT ); Fri, 3 Apr 2009 04:35:17 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:34693 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751406AbZDCIfQ (ORCPT ); Fri, 3 Apr 2009 04:35:16 -0400 Message-ID: <49D5CA3E.6020400@garzik.org> Date: Fri, 03 Apr 2009 04:35:10 -0400 From: Jeff Garzik User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: Linux Kernel Mailing List CC: Linus Torvalds , Andrew Morton , David Rees Subject: Re: Linux 2.6.29 References: <20090325183011.GN32307@mit.edu> <20090325220530.GR32307@mit.edu> <20090326171148.9bf8f1ec.akpm@linux-foundation.org> <20090326174704.cd36bf7b.akpm@linux-foundation.org> <20090326182519.d576d703.akpm@linux-foundation.org> <20090401210337.GB3797@csclub.uwaterloo.ca> <20090402110532.GA5132@aniel> <72dbd3150904020929w46c6dc0bs4028c49dd8fa8c56@mail.gmail.com> <20090402094247.9d7ac19f.akpm@linux-foundation.org> <49D53787.9060503@garzik.org> <49D56DF6.5020300@garzik.org> <49D5C972.8000903@garzik.org> In-Reply-To: <49D5C972.8000903@garzik.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.4 (----) X-Spam-Report: SpamAssassin version 3.2.5 on srv5.dvmed.net summary: Content analysis details: (-4.4 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 729 Lines: 21 Jeff Garzik wrote: > Attached are some additional tests using sync_file_range, dd, an SSD and > a normal SATA disk. The test program -- overwrite.c -- is unchanged > from my last posting, basically the same as Linus's except with > posix_fadvise() Oh, and, as run-test.sh shows, these tests were done with the file pre-allocated and sync'd to disk. The dd and overwrite invocations that follow the first dd invocation do /not/ require the fs to allocate new blocks. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/