node09,挺好
wget http://cachefly.cachefly.net/100mb.test
--2011-11-24 15:31:04-- 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 25.3M/s in 3.9s
root@ovz:~# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync;rm test
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 20.6043 s, 13.0 MB/s
root@ovz:~# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync;rm test
4096+0 records in
4096+0 records out
268435456 bytes (268 MB) copied, 112.359 s, 2.4 MB/s