From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754821Ab3GJRZ1 (ORCPT ); Wed, 10 Jul 2013 13:25:27 -0400 Received: from sam.nabble.com ([216.139.236.26]:59168 "EHLO sam.nabble.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754712Ab3GJRZ0 (ORCPT ); Wed, 10 Jul 2013 13:25:26 -0400 Date: Wed, 10 Jul 2013 10:25:26 -0700 (PDT) From: hyphop To: linux-kernel@vger.kernel.org Message-ID: <1373477126220-681610.post@n7.nabble.com> In-Reply-To: References: <494703114.34959.1360492995961.JavaMail.mail@webmail19> Subject: Re: Abysmal HDD/USB write speed after sleep on a UEFI system MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hello i have same problem. low write speed after system sleep kernel 3.9.9 i can see it HDD SATA & USB disks to i try to make another test before sleep i make file /tmp/test ( /tmp mounted as tmpfs size=8G, i have 16G memory in my system ) dd if=/dev/zero bs=1M count=1000 of=/tmp/test ~ 3,2 GB/s cryptsetup luksFormat /tmp/test cryptsetup luksOpen /tmp/test test dd if=/dev/zero bs=1M count=1000 of=/dev/mapper/test ~ 465 GB/s good speed after sleep dd if=/dev/zero bs=1M count=1000 of=/dev/mapper/test ~ 5MB/s ooops (((( very slow but if write directly in /tmp i can see dd if=/dev/zero bs=1M count=1000 of=/tmp/test2 ~ 3,2 GB/s I can see this is not hardware problem (NOT SATA OR USB) i think is kernel BUG, i i dont have this problem on previous kernel 3.4 Best regards, Tema -- View this message in context: http://linux-kernel.2935.n7.nabble.com/Abysmal-HDD-USB-write-speed-after-sleep-on-a-UEFI-system-tp598586p681610.html Sent from the Linux Kernel mailing list archive at Nabble.com.