Run the following command to test the WRITE speed of a disk: $sync;ddif=/dev/zero of=tempfile bs=1m count=1024;sync1024+0 recordsin1024+0 records out 1073741824 bytes(1.1 GB)copied, 3.28696 s, 327 MB/s 复制 Shell dd: TEST Disk READ Speed The filetempfile, that has just been crea...
I’ll show how to test the read/write speed of a disk from the Linux command line usingddcommand. I’ll also show how to install and usehdparmutility for measuring read speed of a disk on Linux Mint, Ubuntu, Debian, CentOS, RHEL. To get the accurate read/write speed, you should rep...
1) The maximum rotational speed of your hard disk磁盘最大转速 2) The Allocated block size of a file system 文件系统分配的块大小 3) Seek Time磁盘寻道时间 4) The performance rate of the file system's metadata文件系统元数据的性能比率 5) The type of read/Write读写类型 建议:在文件系统测试...
Block Size | Read | Write | Total | IOPS Read | IOPS Write | IOPS ────── | ───── | ───── | ───── | ───── | ───── | ───── 4k | | | 0.00 KB/s | | | 0 --- | --- | --- | --- | --- | --- | --- 64k | | |...
Disk : 18.0 GiB fio Disk Speed Tests (Mixed R/W 50/50): --- Block Size | 4k (IOPS) | 64k (IOPS) --- | --- --- | --- --- Read | 4.64 MB/s (1.1k) | 70.78 MB/s (1.1k) Write | 4.67 MB/s (1.1k) | 71.15 MB/s (1.1k) ...
dd bs=64k count=4k if=/dev/zero of=test 沒有加任何參數,dd預設的方式不包括“同步(sync)”命令。也就是說,dd命令完成前並沒有讓系統真正把檔案寫到磁碟上。所以以上命令只是單純地把這128MB的資料讀到記憶體緩衝當中(寫緩衝[write cache])。所以你得到的將是一個超級快的速度。因為其實dd給你的只是讀取...
ssd_function_template $1 "randwrite" "write" } function result_ssd_template() { local ssd_log=$1 if [ -f "${ssd_log}" ] then sed -i 's/=/,/g' ${ssd_log} sed -i 's/KB\/s/,KB\/s/' ${ssd_log} local log_bw=/tmp/bw_$2.log ...
Sysbench is a command line utility program available on linux that can be used to conduct different types of benchmark tests to measure performance of disk io, memory, cpu and mysql database. In another article we learned how to use sysbench to test ram read/write speed. In this particular...
Whenever I want to buy a new piece of kit I always look for benchmarking test results comparing several different manufacturers offerings. Once I have the kit I run a few tests on my own pc to see if they match the test results posted in articles. Someti