小文件连续读测试
[root@supercloud ~]# time dd if=/dev/sdb5 of=/dev/null bs=1k count=8388608
8388608+0 records in
8388608+0 records out
8589934592 bytes (8.6 GB) copied, 41.9142 seconds, 205 MB/s
real 0m42.006s
user 0m3.873s
sys 0m16.649s
大文件连续读测试
[root@supercloud ~]# time dd if=/dev/sdb5 of=/dev/null bs=1M count=8192
8192+0 records in
8192+0 records out
8589934592 bytes (8.6 GB) copied, 42.0015 seconds, 205 MB/s
real 0m42.027s
user 0m0.009s
sys 0m11.163s
小文件连续写测试
[root@supercloud ~]# dd if=/dev/zero of=/opt/iotest bs=1k count=8388608
8388608+0 records in
8388608+0 records out
8589934592 bytes (8.6 GB) copied, 67.4368 seconds, 127 MB/s
大文件连续写测试
[root@supercloud ~]# dd if=/dev/zero of=/opt/iotest bs=1M count=8192
8192+0 records in
8192+0 records out
8589934592 bytes (8.6 GB) copied, 74.6048 seconds, 115 MB/s
iozone
tar xf
make linux-AMD64
./iozone -a -n 8192m -g 8g -i 0 -i 1 -i 2 -f /opt/iozone.iso -Rb /root/iozone012.xls
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