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[root@xxx ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB) copied, 22.8223 seconds, 47.0 MB/s
[root@xxx ~]# dd if=/dev/zero of=test.bin bs=64k count=4k oflag=dsync
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 62.5924 seconds, 4.3 MB/s
[root@xxx ~]# dd if=/dev/zero of=test.bin bs=64k count=4k oflag=dsync
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 75.639 seconds, 3.5 MB/s
[root@xxx ~]# wget http://cachefly.cachefly.net/100mb.test
--2012-06-20 08:26:26-- http://cachefly.cachefly.net/100mb.test
Resolving cachefly.cachefly.net... 205.234.175.175
Connecting to cachefly.cachefly.net|205.234.175.175|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 104857600 (100M) [application/octet-stream]
Saving to: `100mb.test'
100%[======================================>] 104,857,600 8.23M/s in 16s
2012-06-20 08:26:42 (6.39 MB/s) - `100mb.test' saved [104857600/104857600] |
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