[oe] Performance measurement: Building openembedded-core with and without overclocking on C-i7 2600K

[Anders Darander]

* Ulf Samuelsson <ulf_samuelsson at telia.com> [111018 14:06]:
> 2011-10-18 08:28, Anders Darander skrev:
> > * Ulf Samuelsson<ulf_samuelsson at telia.com>  [111017 22:45]:
> >> If anyone is interested...
> > Build stats are always interesting... ;)

> >> Same machine in two different configurations.
> >> .........................................................#1...........................#2
> >> P8Z68V Pro
> >> Core-i7 2600K @                             3.4 GHz..................4.4 GHz
> >> 8 GB @ ...........................................1333
> >> MHz...............1640 MHz
> >> 1TB WD Black 7200 RPM
> >> Ubuntu 11-10
> >> Almost all source code already in source directory
> > This would severely restrict the usefulness of the comparison. I'd guess
> > that this means that in one case the source will be downloaded, while
> > it'll already be downloaded in the second test. Could you redo the
> > statistics with all sources downloaded?
> I had already built it once before running the first test then updated
> and I think one additional package was downloaded over a 100 MBps line
> so it affects a little, but not too much.

Ok, just curious. Not least as you had one image fail in the first
configuration, which you attributed to a failed download. That remark
made me wonder...

Cheers,
Anders

> I think the conclusion:
>      Increasing the CPU speed by 30% and the memory frequency by 20%
>      gives 10-15% faster build time is OK.

> >> Building meta-toolchain is 13% faster with overclocking.
> > Was the overclocking test run after the non-overclocking?


-- 
Anders Darander
ChargeStorm AB / eStorm AB