[root@vpn ~]# dd if=/dev/zero of=test bs=64k count=512 oflag=dsync
512+0 records in
512+0 records out
33554432 bytes (34 MB) copied, 0.423165 seconds, 79.3 MB/s
[root@vpn ~]# dd if=/dev/zero of=test bs=64k count=512 oflag=dsync
512+0 records in
512+0 records out
33554432 bytes (34 MB) copied, 0.43015 seconds, 78.0 MB/s
[root@vpn ~]# dd if=/dev/zero of=test bs=64k count=512 oflag=dsync
512+0 records in
512+0 records out
33554432 bytes (34 MB) copied, 0.403076 seconds, 83.2 MB/s
[root@vpn ~]# ls
test
[root@vpn ~]# rm -rf test
[root@vpn ~]# wget http://cachefly.cachefly.net/100mb.test
--2011-04-08 20:51:11-- 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 34.5M/s in 2.9s
2011-04-08 20:51:14 (34.5 MB/s) - `100mb.test' saved [104857600/104857600]
[root@vpn ~]# |