From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754713Ab3BJKvA (ORCPT ); Sun, 10 Feb 2013 05:51:00 -0500 Received: from smtprelay0239.b.hostedemail.com ([64.98.42.239]:51369 "EHLO smtprelay.b.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752441Ab3BJKu6 (ORCPT ); Sun, 10 Feb 2013 05:50:58 -0500 X-Greylist: delayed 461 seconds by postgrey-1.27 at vger.kernel.org; Sun, 10 Feb 2013 05:50:58 EST X-Panda: scanned! X-Session-Marker: 742E617274656D406C79636F732E636F6D X-Filterd-Recvd-Size: 1747 Date: Sun, 10 Feb 2013 10:43:15 +0000 (UTC) From: "Artem S. Tashkinov" To: linux-kernel@vger.kernel.org Message-ID: <494703114.34959.1360492995961.JavaMail.mail@webmail19> Subject: Abysmal HDD/USB write speed after sleep on a UEFI system MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [46.146.68.3] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, I have a P8P67 Pro motherboard made by ASUS and recently I decided to switch to EUFI boot. Maybe it's a coincidence or maybe Linux kernel 3.7.6 (vanilla) has some serious bug but after waking up from sleep write performance becomes intolerable. On boot I have: HDD write performance: ~120MB/sec USB write performance: ~18MB/sec After sleep: HDD write performance: ~7MB/sec (i.e 17 times slower) USB write performance: ~0.5MB/sec (i.e. 36 times slower) This is totally unacceptable, the computer becomes unusable. I'm open to suggestions how to debug this extremely serious problem. P.S. Since I'm still using x86 kernel, on boot it switches x86-64 UEFI off: [ 0.000000] efi: EFI v2.31 by American Megatrends [ 0.000000] efi: ACPI=0xdf385000 ACPI 2.0=0xdf385000 SMBIOS=0xdec28e98 MPS=0xfc9a0 [ 0.000000] efi: No EFI runtime due to 32/64-bit mismatch with kernel ... [ 0.000000] efi: Setup done, disabling due to 32/64-bit mismatch Best regards, Artem