From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?44Kr44Kq44CA44Of44Oz44CA44OS44Kn44OD44OX?= Date: Wed, 10 Sep 2014 09:16:21 +0000 Subject: Re: [PATCH 0/5] arm: shmobile: Lager Add USB and SATA support Message-Id: <541016E5.7040307@jinso.co.jp> List-Id: References: <1387370660-20481-1-git-send-email-valentine.barshak@cogentembedded.com> In-Reply-To: <1387370660-20481-1-git-send-email-valentine.barshak@cogentembedded.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: linux-sh@vger.kernel.org Hi Sakato-san On 09/10/2014 04:15 PM, Ryusuke Sakato wrote: > Hi Hiep-san, > > > I believe that I should unite the conditions of the performance test of "CONFIG_CPU_FREQ is not set" on Upstream-v3.16-rc5, > and "CONFIG_CPU_FREQ=y" on uptream-v3.17-rc2. > > >> # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor >> ondemand > In order that you may not be subject to the influence of cpufreq, you should change > "CONFIG_CPU_FREQ is not set", or should perform the following setup. > > 　echo -n performance > /sys/device/system/cpu/cpu0/cpufreq/scaling_governor > 　echo -n performance > /sys/device/system/cpu/cpu1/cpufreq/scaling_governor > 　echo -n performance > /sys/device/system/cpu/cpu2/cpufreq/scaling_governor > 　echo -n performance > /sys/device/system/cpu/cpu3/cpufreq/scaling_governor > As you pointed out, I changed "CONFIG_CPU_FREQ=y" to "CONFIG_CPU_FREQ is not set" on uptream-v3.17-rc2 , I saw that the writing speed on v3.17-rc2 and is same writing speed on v3.16-rc5. # mount -t tmpfs -o size@0m tmpfs /tmp root@linaro-nano:~# dd if=/dev/urandom of=/tmp/file-350mb bs=1M count50 350+0 records in 350+0 records out 367001600 bytes (367 MB) copied, 90.2065 s, 4.1 MB/s root@linaro-nano:~# mount /dev/sda1 /mnt/ kjournald starting. Commit interval 5 seconds EXT3-fs (sda1): using internal journal EXT3-fs (sda1): recovery complete EXT3-fs (sda1): mounted filesystem with ordered data mode root@linaro-nano:~# time cp /tmp/file-350mb /mnt/file; time umount /mnt/ real 0m5.386s user 0m0.010s sys 0m5.200s real 0m1.078s user 0m0.020s sys 0m0.510s Thanks you for your help! Cao Minh Hiep.