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Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-comp
From: |
Ludovic Courtès |
Subject: |
Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex |
Date: |
Mon, 04 Jun 2007 18:50:35 +0200 |
User-agent: |
Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) |
Hi,
"Kjetil S. Matheussen" <address@hidden> writes:
> libgc (v6.8) was compiled with the --enable-threads=posix only.
So `THREAD_LOCAL_ALLOC' was defined in your libgc build, right?
> Running the benchmark program directly in guile gives no
> difference. Both spent about 50 seconds running the test.
"Directly in Guile" means that you just run:
$ ./pre-inst-guile gcbench.scm
Is that correct?
> Inside snd is another matter:
>
>
> [1] [2] [3]
> Guile gc 96mb 176mb 54s.
> Boehm gc 99mb 107mb 118s.
>
>
> [1] Memory before running test reported by top.
> [2] Memory after running test reported by top
> [3] Time to run test in seconds.
What does "inside snd" mean exactly?
Is snd multi-threaded? Does it use `scm_without_guile ()' for instance
(e.g., when a thread blocks for I/O)?
Does the second run of `gcbench.scm' within Guile alone (no snd) show
similar performance behavior in the libgc case? I.e.:
$ guile-boehm --no-debug
guile> (load "gcbench.scm")
;;; takes 50s. to complete
guile> (load "gcbench.scm")
;;; takes 118s. to complete
For libgc, there are a few environment variables that might be
influential, e.g., `GC_MAXIMUM_HEAP_SIZE' (see `README.environment' from
libgc). Likewise for Guile's GC, but they're undocumented AFAIK (grep
for `scm_getenv_int' in the `libguile' directory).
Thanks,
Ludovic.
- Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil Svalastog Matheussen, 2007/06/03
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil Svalastog Matheussen, 2007/06/03
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil Svalastog Matheussen, 2007/06/03
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Ludovic Courtès, 2007/06/04
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil S. Matheussen, 2007/06/04
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil S. Matheussen, 2007/06/04
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Ludovic Courtès, 2007/06/04
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil S. Matheussen, 2007/06/04
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex,
Ludovic Courtès <=
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil S. Matheussen, 2007/06/04
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Kjetil S. Matheussen, 2007/06/04
- Re: Experience with guile + Boehm GC in SND (Re: New versions of rt-compiler.scm, rt-examples.scm and rt.tex, Ludovic Courtès, 2007/06/05