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, 6.25203 s, 172 MB/s

///////////////////////////////////////////////////////

dd bs=1M count=512 if=/dev/zero of=test conv=fdatasync
512+0 records in
512+0 records out
536870912 bytes (537 MB) copied, 3.21923 s, 167 MB/s

///////////////////////////////////////////////////////

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, 0.737753 s, 45.5 MB/s

///////////////////////////////////////////////////////

wget cachefly.cachefly.net/100mb.test -O /dev/null
--2012-04-01 19:40:03--  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: â/dev/nullâ

100%[======================================>] 104,857,600 7.71M/s   in 12s

///////////////////////////////////////////////////////

wget http://www.volumedrive.com/bigtest.tgz -O /dev/null
--2012-04-01 19:40:23--  http://www.volumedrive.com/bigtest.tgz
Resolving http://www.volumedrive.com... 204.124.180.12
Connecting to http://www.volumedrive.com|204.124.180.12|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 129674464 (124M) [application/x-tar]
Saving to: â/dev/nullâ

100%[======================================>] 129,674,464 1.69M/s   in 64s