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[root@bw ~]# dd if=/dev/zero of=test bs=64k count=16k
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 10.1958 seconds, 105 MB/s
[root@bw ~]# dd if=/dev/zero of=test2 bs=64k count=16k conv=fsync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 4.73386 seconds, 227 MB/s
[root@bw ~]# dd if=test2 of=/dev/null bs=64k count=16k
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 0.323589 seconds, 3.3 GB/s
不知道我测试的命令对不对。。求指点。。 |
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