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原来发现,速度慢,是硬盘问题
[root@=_=! ~]# dd if=/dev/zero of=test bs=64k count=1k oflag=dsync
1024+0 records in
1024+0 records out
67108864 bytes (67 MB) copied, 62.3426 seconds, 1.1 MB/s
[root@=_=!~]# dd if=/dev/zero of=test bs=64k count=1k oflag=dsync
1024+0 records in
1024+0 records out
67108864 bytes (67 MB) copied, 110.684 seconds, 606 kB/s
[root@=_= ~]# dd if=/dev/zero of=test bs=64k count=1k oflag=dsync
1024+0 records in
1024+0 records out
67108864 bytes (67 MB) copied, 54.109 seconds, 1.2 MB/s |
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