Linked by Thom Holwerda on Tue 28th Oct 2008 10:51 UTC
Ubuntu, Kubuntu, Xubuntu With the release of Ubuntu 8.10 only a few days away, Phoronix decided to take a look at the performance figures over the past releases - from Ubuntu 7.04 to Ubuntu 8.10. Phoronix used its own extensive test suite on fresh installations, with the same parameters, on the identical hardware. The results are rather surprising. Update: I've added some more information about this, gathered from the Ubuntu mailing list. You can find it in the 'read more'.
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It may be Ubuntu's fault...
by Kokopelli on Tue 28th Oct 2008 13:20 UTC
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but something is still wrong. LAME is primarily a CPU bound process, to nearly double in encoding time suggests either the compiler used had issues with the intel optimizations or that something was throttling the CPU.

Further it is not clear what they are comparing. It is not release vs release. To do that they should be using the packages that came with the release (with the optimizations and choices that a normal user would be using), not a custom compile. The question is whether or by how much Ubuntu has slowed. A custom compiled LAME encoder is not showing how LAME encoding speed varies between releases but how much other things on the system slowed a common version of LAME at the source level.

Still though, the Phoronix writers are a fairly technically adept bunch. If it is a problem with methodology it is one rooted in the way the default Ubuntu install is configured. I guess over time we will see what shakes out.

Edited 2008-10-28 13:21 UTC

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