BFS vs. mainline scheduler benchmarks and measurements

Posted Sep 7, 2009 13:18 UTC (Mon) by aigarius (subscriber, #7329)
In reply to: BFS vs. mainline scheduler benchmarks and measurements by kragil
Parent article: BFS vs. mainline scheduler benchmarks and measurements

i7 has been around for what? A year already? 8 cores there. Benchmarking forward a couple years for kernel development is a reasonable assumption. Meanwhile, even people with quad-cores say that Ingo's tests are still showing the same results.

Cory needs to show quantifiable tests so that performance of different versions of schedulers can actually be compared. How can we know that a patch improves on the code if there is no quantifiable number showing that conclusively?

Scientific approach, please. Insulting people does not win arguments in technical communities. Facts, tests and numbers do.

BFS vs. mainline scheduler benchmarks and measurements

Posted Sep 8, 2009 7:48 UTC (Tue) by epa (subscriber, #39769) [Link]

It might help to see some numbers. Take Fedora's smolt data, which is from people who have clicked 'yes' when installing Fedora and have reported what hardware they use.

This shows that more than half of Fedora systems are dual-processor, with another 38% having a single CPU. So based on hardware that's in use now, a one- or two- processor test would be more reasonable. Of course it's useful to test on 16-processor monsters as well, but that is not the typical desktop and won't be for some time. (And by the time it is, all sorts of other assumptions will have changed too.)

BFS vs. mainline scheduler benchmarks and measurements

Posted Sep 8, 2009 8:34 UTC (Tue) by branden (guest, #7029) [Link]

Aigarius,

How about we bench based on the profiles of the machines people bring to
Debconf?