Comment 37 for bug 620074

Did some more testing. My father has an Eee PC 900 exactly the same as mine also running Ubuntu 8.10 with the same kernel as mentioned before. Only difference that I can think of - he doesn't use LUKS and LVM like me, he instead has his / directly on /dev/sdb1 (internal SSD).

I also, in addition to trying to launch a Terminal via Gnome (as I did previously) I tried the vim "stuttering" test by creating a file, saving it, and holding down a key to see when it stutters.

The results of these tests:

- On both my own (encypted) and the other (unencrypted) computer, vim occasionally freezes for a few seconds while I cp a file from USB memory to internal SSD.

- On my computer (encrypted) lauching a gnome-terminal takes much longer while copying a file from SSD than on the other computer. While there is a noticable slowdown on the unencrypted machine, on the encrypted machine sometimes the gnome-terminal won't even launch until *after* the copy is complete.

In conclusion - the effect exists on both machines, but the encryption of the SSD very significantly increases the problem. While some slowdown due to encryption should be expected, it should not make the machine almost completely unusable while copying a file from a USB stick to the internal SSD.