Make a Simple RAM disk: Create the directory location you want to mount: mkdir /media/ram mount -t tmpfs -o size=1G tmpfs /media/ram/ Test how fast it is to write to it: dd if=/dev/zero of=/media/ram/zero bs=4k count=10000 Test how fast it is to read from it: dd if=/media/ram/zero of=/dev/null bs=4k count=10000 Remove your test file: rm /media/ram/zero If you want to create it again when you reboot: vi /etc/fstab none /media/ram tmpfs defaults,size=1G 0 0 If you were really looking for a way to test a regular hard disk: gnome-diskshttp://askubuntu.com/questions/87035/how-to-check-hard-disk-performance
Create and test speed of RAM disk on Ubuntu Linux
Ubuntu 12.04 VLAN trunk to OpenWRT 10.03.1 router
sudo su apt-get install vlan vconfig add eth0 2 vconfig add eth0 3 vconfig add eth0 4 ifconfig eth0 0.0.0.0 ifconfig eth0 mtu 1504 dhclient eth0.2 ifconfig eth0.2 mtu 1500 dhclient eth0.3 ifconfig eth0.3 mtu 1500 dhclient eth0.4 ifconfig eth0.4 mtu 1500 echo "nameserver 8.8.8.8" > /etc/resolv.conf ping -M do -s 1472 -c 1 google.com ifconfig uname -a Linux ubuntu 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux lspci 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) lspci -n 02:00.0 0200: 10ec:8168 (rev 06)
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