Re: Compacting GC (again)

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On Tue, Nov 18, 2008 at 1:13 PM, Ciprian Mustiata <
[email protected]> wrote:

> Hello,
>
> Great achievements with the Linear IL runtime and Mono.SIMD optimizations.
> The linked-list allocators as Visual C++'s runtime new and delete works for
> a large amount of small objects (the worse case anyway for a C++ program)
> around 10-40 times slower than the GC allocation in C#. Anyway, mono
> allocations/deallocations took (again in my microbenchmarks) around of the
> speed of C++. I've happily read about the 2.2+ versions will try to include
> the compacting GC.
>
> The question is: for microbenchmarks with small objects, that will be the
> main thing that will be tested when someone will use the CompactingGC (and
> for typical desktop programs that do processing, like a XML processing logic
> or ASP.NET applications), what should be the typical gain on mater of
> speed? Can be enabled right now to test it from SVN code?
>

The new generational gc is faster than the current one but the main
advantage is the smaller pause times.

Right now you can do a custom build of mono with the new gc enabled. It's a
very experimental feature and it's neither complete or ready for general
use, so use at your our risk.




>
> Best achievements forward in Mono's future!
> Ciprian Mustiata
>
> _______________________________________________
> Mono-gc-list maillist  -  [email protected]
> http://lists.ximian.com/mailman/listinfo/mono-gc-list
>
>

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<br><br><div class="gmail_quote">On Tue, Nov 18, 2008 at 1:13 PM, Ciprian Mustiata <span dir="ltr">&lt;<a href="mailto:[email protected]">[email protected]</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello,<br><br>Great achievements with the Linear IL runtime and Mono.SIMD optimizations. The linked-list allocators as Visual C++&#39;s runtime new and delete works for a large amount of small objects (the worse case anyway for a C++ program) around 10-40 times slower than the GC allocation in C#. Anyway, mono allocations/deallocations took (again in my microbenchmarks) around of the speed of C++. I&#39;ve happily read about the 2.2+ versions will try to include the compacting GC.<br>

<br>The question is: for microbenchmarks with small objects, that will be the main thing that will be tested when someone will use the CompactingGC (and for typical desktop programs that do processing, like a XML processing logic or <a href="http://ASP.NET" target="_blank">ASP.NET</a> applications), what should be the typical gain on mater of speed? Can be enabled right now to test it from SVN code?<br>

</blockquote><div><br>The new generational gc is faster than the current one but the main advantage is the smaller pause times.<br><br>Right now you can do a custom build of mono with the new gc enabled. It&#39;s a very experimental feature and it&#39;s neither complete or ready for general use, so use at your our risk.<br>
<br><br>&nbsp;</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>Best achievements forward in Mono&#39;s future!<br><font color="#888888">Ciprian Mustiata<br>
 
</font><br>_______________________________________________<br>
Mono-gc-list maillist &nbsp;- &nbsp;<a href="mailto:[email protected]">[email protected]</a><br>
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<br></blockquote></div><br>

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