linux 测试硬盘,如何测试硬盘读写性能

linux硬盘读写性能测试 1，linux硬盘读写性能测试2，固态硬盘

1，linux硬盘读写性能测试 apt install hdparm -y 不使用缓存，测试硬盘 # hdparm -t /dev/sda/dev/sda: Timing buffered disk reads: 676 MB in 3.00 seconds = 225.33 MB/sec 查看硬盘缓存 # hdparm -I /dev/sda | grep buffercache/buffer size = unknown 查看硬盘写缓存是否打开 # hdparm -W /dev/sda/dev/sda: write-caching = 1 (on) 关闭硬盘写缓存 # hdparm -W 0 /dev/sda 打开硬盘写缓存 # hdparm -W 1 /dev/sda # hdparm -T /dev/sda/dev/sda: Timing cached reads: 27920 MB in 2.00 seconds = 13976.25 MB/sec # hdparm -tT --direct /dev/sda/dev/sda: Timing O_DIRECT cached reads: 1014 MB in 2.00 seconds = 506.59 MB/sec Timing O_DIRECT disk reads: 748 MB in 3.00 seconds = 248.93 MB/sec # hdparm -t --direct /dev/sda/dev/sda: Timing O_DIRECT disk reads: 692 MB in 3.01 seconds = 230.10 MB/sec 测试硬盘读取速度 # for i in 1 2 3; do hdparm -t --direct /dev/sdb; done/dev/sdb: Timing O_DIRECT disk reads: 692 MB in 3.00 seconds = 230.37 MB/sec/dev/sdb: Timing O_DIRECT disk reads: 754 MB in 3.01 seconds = 250.80 MB/sec/dev/sdb: Timing O_DIRECT disk reads: 756 MB in 3.00 seconds = 251.88 MB/sec 2，固态硬盘 # hdparm -t /dev/nvme0n1/dev/nvme0n1: Timing buffered disk reads: 9176 MB in 3.00 seconds = 3058.37 MB/sec

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