Encrypted Home Directory Performance

December 8, 2008

Thanks very much to Michael Larabel of Phoronix.

He picked up the instructions from my last blog post, Ubuntu Jaunty: Encrypted Home Directories and ran the Phoronix performance suites.

These are very early results, on a nascent Jaunty distribution still undergoing heavy development. But I must say that I’m rather pleased with the performance hit to the majority of the workloads they tested.

There was roughly a 1% hit in most tests (compilation, compression, audio/video encoding, image processing). The hit was a bit more significant when encrypting a file in userspace, on top of eCryptfs (which is really asking the kernel to encrypt already encrypted data, and compress), as well as the huge-file write. We’re looking into some optimizations we might be able to make at the kernel level to improve this.

Without further adieu…

http://global.phoronix-test-suite.com/?k=profile&u=phorocrypt-16497-10491-19665

:-Dustin

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One Response to “Encrypted Home Directory Performance”

  1. dfl Says:

    what will happen to .ssh/authorized_keys?


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