performance testing of UNWIND kernel option
Rui Miguel Silva Seabra
rms at 1407.org
Tue Mar 8 16:11:26 CET 2011
Em 08-03-2011 14:01, Gennady Kupava escreveu:
> Hi, list.
> Today I noticed the following change in SHR:
> http://git.openembedded.org/cgit.cgi/openembedded/commit/?id=1516588acd3c4b4dd4add71d06ab8ce0d1bafa02 (by Denis 'GNUtoo' Carikli<GNUtoo at no-log.org>) and decided to lmbench it.
> Here are results: http://www.bsdmn.com/lmbench/unwind_summary.txt
> You can see comparison of:
> 34def -> kernel with CONFIG_FRAME_POINTER
> unwind -> kernel with CONFIG_ARM_UNWIND
> default -> for reference, old debugging kernel
> The unwind option provide clear benefit of 5%-10% in almost every area.
> Nice spot Denis!
It does feel faster!
OpenMoko Freerunner, probably the only "obsolete" phone that keeps
getting better :)
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