SableVM performance [Was: Re: [Sablevm-user] hello]

[Grzegorz B. P. <ga...@de...>]

On (18/04/04 11:33), Alan Littleford wrote:
> Performance-wise do you have a feel for how Sable might compare against
> the threaded-int version of Kaffe (which I guess just about sets our
> minimum acceptable level of performance) ?

It will surely be much faster. On the 118th page of 
http://www.sable.mcgill.ca/publications/thesis/phd-gagnon/sable-thesis-2002-phd-gagnon.pdf
you'll find results for a number of benchmarks and applications.

They show, that that Kaffe's interpreter is 3.5 to 7 times slower than
SableVM. At the same time SableVM's performance was very near Sun's JDK
interpteter, which (as informed sources say) is partially written in
assembly (SableVM is pure C).

In comparision with JITs SableVM's interpreter achieved ex. from 0.17 to
0.88 performance of JikesRVM (for biger, real-life applications like Soot
and SableCC SableVM achieved 0.88 and 0.75 performance of JikesRVM!).

We all know that there are lies, big lies and benchmarks, but this
should give you some picture of what to expect.

HTH

				Grzegorz B. Prokopski

PS: All these results were for "inlined" engine, which is the fastest
one. On embedded systems, with RAM memory constraints, you might want to
use "direct" instead, so the performance can be slightly degraded. See
page 40 of the above PDF for details.

-- 
Grzegorz B. Prokopski <ga...@de...>
Debian GNU/Linux      http://www.debian.org
SableVM - LGPLed JVM  http://www.sablevm.org
Why SableVM ?!?       http://devel.sablevm.org/wiki/WhySableVM