Re: Re: new icc kernel patch available (with kernel PGO)

[ingo]

Hi,

I published some preliminary results in the German Linux Magazine, which
are copyrighted now. Sorry.
Some hints: maximum performance gain approx. 40%, avg. perf. gain:
approx. 8%; computed by LMBench+OProfile (accurate CPU cycle
measurement, 10us timer resolution).
These results were taken from a "general kernel", i.e. widespread kernel
load (foreground and background activities, networking, filesystems,
drivers, etc.) during kernel PGO instrumentalization.
The big advantage of kernel PGO: you can create your own specialized
kernels for dedicated tasks (3 phase compilation scheme: primary
compilation, kernel profiling (PGO), feedback compilation).

Jan Dittmer <j.dittmer@xxxxxxxxxxx> schrieb am 07.06.2004, 16:51:06:
> Zitat von ingo@xxxxxxxxxxxxx:
> > v0.9.1: please check http://www.pyrillion.org/linuxkernelpatch.html for
> > a new kernel patch including kernel PGO (profile guided optimization)
> > support, covers 2.6.3 - 2.6.6 (please note: 2.6.3, 2.6.4 deprecated).
> 
> Do you have any benchmark numbers that show any improvement?
> 
> Jan
> 
> --
> j.dittmer@xxxxxxxxxxx
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