From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Ts'o Subject: Re: [PATCH 32/47] e2fsck: read-ahead metadata during passes 1, 2, and 4 Date: Wed, 10 Dec 2014 17:00:44 -0500 Message-ID: <20141210220044.GE3370@thunk.org> References: <20141107215042.883.49888.stgit@birch.djwong.org> <20141107215413.883.38863.stgit@birch.djwong.org> <20141210202756.GA21938@birch.djwong.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org To: "Darrick J. Wong" Return-path: Received: from imap.thunk.org ([74.207.234.97]:50170 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757471AbaLJWAl (ORCPT ); Wed, 10 Dec 2014 17:00:41 -0500 Content-Disposition: inline In-Reply-To: <20141210202756.GA21938@birch.djwong.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Dec 10, 2014 at 12:27:56PM -0800, Darrick J. Wong wrote: > FWIW I finally got UAS working in Linux; with that hardware and the default > readahead size, I see about a 5% reduction in fsck runtime. The same dock > plugged into a USB2 port (i.e. BOT) shows about a 2% increase in runtime. Interesting; what UAS drive were you using? I've been thinking about trying to get one to play with. - Ted