差距

lazyzhu

dd if=/dev/zero of=test.bin bs=64k count=4k conv=fdatasync && rm -rf test.bin
dd if=/dev/zero of=test.bin bs=64k count=4k oflag=dsync && rm -rf test.bin
dd if=/dev/zero of=test.bin bs=64k count=4k conv=fdatasync && rm -rf test.bin
dd if=/dev/zero of=test.bin bs=64k count=4k oflag=dsync && rm -rf test.bin
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 1.94308 seconds, 138 MB/s
[root@MyHost ~]# dd if=/dev/zero of=test.bin bs=64k count=4k oflag=dsync && rm -                rf test.bin
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 18.0739 seconds, 14.9 MB/s
[root@MyHost ~]# dd if=/dev/zero of=test.bin bs=64k count=4k conv=fdatasync && r                m -rf test.bin
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 1.69369 seconds, 158 MB/s
[root@MyHost ~]# dd if=/dev/zero of=test.bin bs=64k count=4k oflag=dsync && rm -                rf test.bin
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 16.3012 seconds, 16.5 MB/s

chlx

cc:/# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync
59+0 records in
59+0 records out
3866624 bytes (3.9 MB) copied, 9.80971 s, 394 kB/s
晒下陨石盘

软件风暴

这个不好说

大湿兄

不得了

yexinzhu

人品//////

大胡子

靠谱？

Kvm