[Vm-dev] CogVM performance

David T. Lewis lewis at mail.msen.com
Wed May 20 01:07:15 UTC 2015


The generated source files have a comment block that indicate the VMMaker
sources from which they were generated. The SVN 3306 src files came from
VMMaker.oscog-eem.1155, and the SVN 3308 src files were generated from
VMMaker.oscog-eem.1178. The changes that produce the performances difference
will be found somewhere in the VMMaker commits it that range.

Dave


On Tue, May 19, 2015 at 10:40:15PM +0200, Levente Uzonyi wrote:
> 
> And after that I checked out 3308 of src, and rebuilt the VM again:
> 
> '934306569 bytecodes/sec; 46368169 sends/sec'
> 
> The files which were changed from 3306 to 3308 are:
> 
> U    src/vm/cointerp.c
> U    src/vm/cointerpmt.c
> U    src/vm/cogit.c
> U    src/vm/cointerp.h
> U    src/vm/gcc3x-cointerp.c
> U    src/vm/cointerpmt.h
> U    src/vm/gcc3x-cointerpmt.c
> U    src/vm/cogit.h
> U    src/plugins/QuicktimePlugin/QuicktimePlugin.c
> 
> Levente
> 
> On Tue, 19 May 2015, Levente Uzonyi wrote:
> 
> >
> >The difference is somewhere in the sources. I just checked out revision 
> >3306 of the src directory, and rebuilt a CogVM (ht one, and kept the 
> >platform files at 3345. I used some extra CFLAGS which are responsible for 
> >the higher bytecodes/sec, ignore that.). It gives the following:
> >
> >'941176470 bytecodes/sec; 122927085 sends/sec'
> >
> >While 3343 gives:
> >
> >'896672504 bytecodes/sec; 46102703 sends/sec'
> >
> >Levente
> >


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