~
is local, ~/htdocs
mounted by vboxsf, /var/htdocs
mounted by nfs.
local
read
root@Ubuntu:~# time dd bs=8k count=300000 if=test of=/dev/zero 300000+0 records in 300000+0 records out 2457600000 bytes (2.5 GB) copied, 3.9852 s, 617 MB/s real 0m3.990s