ArsGeek

Readyboost for Vista is a feature added to the OS where you can encourage your limping Vista install to jog a bit faster by essentially using a smallish USB drive as disk cache.  There’s also some Vista Voodoo with Superfetch going on there.

While Ubuntu (the distro that I use) and other distros don’t really use Superfetch, you can still get an advantage using the disk cache functionality - particularly if you’re running on a system that doesn’t have a ton of RAM available. This tutorial is written with Ubuntu in mind but can be easily modified to use with just about any distro.  And yes, there’s some command line stuff.  No, it’s not as guified as Vista.

First, stick the USB drive into an open USB slot. Make sure it’s a drive that you don’t mind overwriting.

Ubuntu should mount this automagically in /media/disk.  You’ll probably also get a nifty icon on your desktop.

To unmount this  - open up a terminal session (Applications-> Accessories-> Terminal) and type

mount

Now look to see where your USB drive is mounted.  In Ubuntuland it’s usually under /media/disk or /media/usbdisk.  On my system it’s mounted like this:

/dev/sdb1 on /media/disk type vfat (rw,nosuid,nodev,uhelper=hal,shortname=mixed,uid=1000,utf8,umask=077,flush)

The easy way to tell if this is the correct disk is to run the mount command before you stick it in your USB slot and then after.  The newest mount - well that’s the one you want.

To unmount this, type:

sudo umount /dev/sdb1

Of course, change the /dev/sdb1 bit to reflect what’s on your system.

Now, we’re going to create a swap file on the unmounted USB drive.  In my case I’ll type:

sudo mkswap /dev/sdb1

Again, change the /dev/sdb1 bit to what you say when you ran the ‘mount’ command earlier.

Now that I’ve filled this drive with a swap partition, it’s time to turn it on and give it high priority.

sudo swapon -p 32767 /dev/sdb1

That turns the swap partition on, with a priority (-p) of 32767.  Why 32767?  Well that’s the highest priority available.  Here’s the documentation if you’re interested.

You can double check that you did everything correctly by checking the /proc/swaps file:

cat /proc/swaps

My output is as follows:

Filename                Type        Size    Used    Priority
/dev/sda5                               partition    3229024    0    -1
/dev/sdb1                               partition    1981928    0    32767

You can see I have about 2GB of swap space allocated on /dev/sdb1

This won’t give you a huge speed boost on higher memory machines but if you’re using a laptop with only 512 megs of RAM you should see a noticable difference.

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