Running An Encrypted LVM In Ubuntu 10.10
Phoronix: Running An Encrypted LVM In Ubuntu 10.10
Back with Ubuntu 7.10 an option was added to Ubuntu's alternate CD installer to easily setup an encrypted LVM during the Ubuntu installation process. This would better protect your personal data in the case your laptop or mobile device was ever stolen or misplaced as the Ubuntu Linux installation cannot boot if the encrypted LVM cannot be mounted with the encryption pass-phrase. Of course, encrypting the entire root partition can cause a performance penalty as some of our earlier results have shown while introduced in Ubuntu 9.04 was support for home encryption where only your SWAP and home folder is encrypted and this is done using eCryptfs. This continues to be Canonical's preferred method of encrypting user data with it being available from the standard Ubuntu installer while even three years later only the install-time encrypted LVM support can be accessed from their alternate installer. For those serious about encrypting their disk drive on Linux, we have new benchmarks from Ubuntu 10.10 showing how an encrypted LVM will affect your file-system performance.
i720QM doesn't have aes ni
I think Michael did this test with a i7 720QM. The 720QM is a 45nm "Clarksfield" part, which doesn't have the AES instructions. The 32nm Clarkdale/Arrandale processors have these instructions. There was even some talk at one point that the AES instructions would be implemented on the graphics core included with westmere processors.
Originally Posted by ChrisIrwin
Some folks have gotten ~ 550 MiB / sec throughput to ramdrives with a i7-620M (Arrandale). Without AES-NI this drops to ~ 100 MiB / sec. http://www.robo47.net/blog/198-Intel...Debian-Squeeze.