From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752518Ab1GRUrm (ORCPT ); Mon, 18 Jul 2011 16:47:42 -0400 Received: from adelie.canonical.com ([91.189.90.139]:35203 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751400Ab1GRUrk (ORCPT ); Mon, 18 Jul 2011 16:47:40 -0400 Date: Mon, 18 Jul 2011 15:47:33 -0500 (CDT) From: Manoj Iyer X-X-Sender: manjo@lazy To: Chris Ball cc: Manoj Iyer , Arnd Bergmann , linux-kernel@vger.kernel.org, jbarnes@virtuousgeek.org, matsumur@nts.ricoh.co.jp, linux-pci@vger.kernel.org, linux-mmc@vger.kernel.org Subject: Re: [PATCH] mmc: Added quirks for Ricoh 1180:e823 lower base clock frequency In-Reply-To: Message-ID: References: <1310419715-13254-1-git-send-email-manoj.iyer@canonical.com> <201107131835.25217.arnd@arndb.de> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="8323329-513804810-1311022057=:1677" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-513804810-1311022057=:1677 Content-Type: TEXT/PLAIN; charset=utf-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Chris, Right, without the patch I get.. [ 52.526665] mmc0: new SDHC card at address e624 [ 52.571228] mmcblk0: mmc0:e624 SD16G 14.8 GiB [ 52.591071] mmcblk0: retrying using single block read [ 52.593105] mmcblk0: error -84 transferring data, sector 0, nr 8, card= =20 status 0x900 [ 52.593109] end_request: I/O error, dev mmcblk0, sector 0 [ 52.594594] mmcblk0: error -84 transferring data, sector 1, nr 7, card= =20 status 0x900 [ 52.594604] end_request: I/O error, dev mmcblk0, sector 1 [ 52.602893] quiet_error: 24 callbacks suppressed [ 52.602902] Buffer I/O error on device mmcblk0, logical block 0 [ 52.605349] ldm_validate_partition_table(): Disk read failed. [ 52.605384] Dev mmcblk0: unable to read RDB block 0 [ 52.607729] mmcblk0: unable to read partition table u@u:~$ So, I cannot generate any comparison data with this SD card. On Mon, 18 Jul 2011, Chris Ball wrote: > Hi Manoj, > > On Mon, Jul 18 2011, Manoj Iyer wrote: >> Here are the results with SanDisk SDSDXP1-016G-A75 16GB Extreme Pro >> SDHC Memory Card. >> >> u@u:~/flashbench$ sudo ./flashbench -a /dev/mmcblk0p1 >> [sudo] password for u: >> align 4294967296 pre 1.16ms on 1.15ms post 1.15ms >> diff -2024ns >> align 2147483648 pre 1.2ms on 1.2ms post 1.2ms >> diff 522ns >> align 1073741824 pre 1.21ms on 1.2ms post 1.2ms >> diff 570ns >> align 536870912 pre 1.2ms on 1.2ms post 1.2ms diff 662= ns >> align 268435456 pre 1.2ms on 1.2ms post 1.2ms diff 404= ns >> align 134217728 pre 1.2ms on 1.2ms post 1.2ms diff >> -1692ns >> align 67108864 pre 1.15ms on 1.16ms post 1.16ms diff >> 1.37=C2=B5s >> align 33554432 pre 1.18ms on 1.19ms post 1.15ms diff >> 31.3=C2=B5s >> align 16777216 pre 1.17ms on 1.19ms post 1.15ms diff >> 31.5=C2=B5s >> align 8388608 pre 1.17ms on 1.21ms post 1.18ms diff >> 32.9=C2=B5s >> align 4194304 pre 1.37ms on 1.55ms post 1.17ms diff 274= =C2=B5s >> align 2097152 pre 1.37ms on 1.37ms post 1.39ms diff >> -7992ns >> align 1048576 pre 1.33ms on 1.33ms post 1.34ms diff >> -7793ns >> align 524288 pre 1.33ms on 1.33ms post 1.34ms diff >> -6641ns >> align 262144 pre 1.34ms on 1.38ms post 1.35ms diff >> 33.8=C2=B5s >> align 131072 pre 1.35ms on 1.37ms post 1.34ms diff >> 27.2=C2=B5s >> align 65536 pre 1.34ms on 1.37ms post 1.34ms diff >> 31.7=C2=B5s >> align 32768 pre 1.33ms on 1.37ms post 1.34ms diff >> 32.5=C2=B5s >> >> u@u:~/flashbench$ sudo ./flashbench -O --erasesize=3D$[4 * 1024 * 1024] >> --blocksize=3D$[256 * 1024] /dev/mmcblk0p1 --open-au-nr=3D2 >> 4MiB 23.2M/s >> 2MiB 23.6M/s >> 1MiB 23.5M/s >> 512KiB 23.2M/s >> 256KiB 23.2M/s >> u@u:~/flashbench$ > > I don't understand whether these measurements are before or after your > patch -- we're looking to see what the *difference* in performance is > with the patch applied, right? > > Thanks, > > - Chris. > --=20 > Chris Ball > One Laptop Per Child > > -- =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Manoj Iyer Ubuntu/Canonical Hardware Enablement =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --8323329-513804810-1311022057=:1677--