Groups > comp.lang.java.programmer > #5054

Re: Managed-Code Bloat

From	BGB <cr88192@hotmail.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: Managed-Code Bloat
Date	2011-06-07 00:37 -0700
Organization	albasani.net
Message-ID	<iskkl1$6r5$1@news.albasani.net> (permalink)
References	(3 earlier) <isjobk$e3s$1@dont-email.me> <isjq2m$pb$1@lust.ihug.co.nz> <isjsa7$2j9$1@dont-email.me> <isjvee$3na$1@lust.ihug.co.nz> <isk4vu$baq$1@dont-email.me>

Show all headers | View raw

On 6/6/2011 8:13 PM, Joshua Cranmer wrote:
> On 6/6/2011 6:38 PM, Lawrence D'Oliveiro wrote:
>> In message<isjsa7$2j9$1@dont-email.me>, Joshua Cranmer wrote:
>>> Both SpiderMonkey and V8 are garbage-collected.
>>
>> Probably same here.
>
> That is not the case. I have actually patched the source code to
> SpiderMonkey myself, I have literally sat next to the people who work on
> the engine, SpiderMonkey is garbage-collected. Mark-and-trace, although
> the plan is to move to generational GC. I'm not so sure about V8, but
> the page I linked to explicitly mentions generational garbage
> collection, so I'm sure it's in the same boat.
>
> If you don't believe that, what would it take to get you to believe the
> truth? A signed note from Brendan Eich himself?
>

yep... and my own language (partly derived from JavaScript) also uses 
GC, but it is based on conservative mark/sweep (similar to the Boehm GC).

sadly, the problem with traditional generation GC strategies is that 
they would depend on having a precise GC, which has the major drawback 
of being notably painful to work with (apart from having to 
"pin"/"defile" pretty much any object which may be potentially 
referenced by "unsafe" C code).

the tradeoff though is that precise generational GC's can get much 
better performance than conservative mark/sweep.

however, my GC is used by nearly all of the C code as well, and with 
care, most GC stalls can be largely avoided (I am using it successfully 
with a 3D engine, doing an FPS style game).

part of the trick though is that I am mostly treating the GC as if it 
were a manual MM, as in, freeing stuff when it is known no longer needed 
(and the script VM also has a few tricks to reduce garbage production as 
well...).

or such...

Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-06 18:47 +1200
  Re: Managed-Code Bloat Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-06-06 06:40 -0300
    Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-06 23:04 +1200
      Re: Managed-Code Bloat Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-06-06 17:41 -0300
        Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 11:13 +1200
          Re: Managed-Code Bloat Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-06-07 07:08 -0300
      Re: Managed-Code Bloat Silvio <silvio@moc.com> - 2011-06-07 09:40 +0200
        Re: Managed-Code Bloat Patricia Shanahan <pats@acm.org> - 2011-06-07 06:08 -0700
  Re: Managed-Code Bloat Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-06-06 11:35 -0400
    Re: Managed-Code Bloat Alessio Stalla <alessiostalla@gmail.com> - 2011-06-06 10:47 -0700
      Re: Managed-Code Bloat Martin Gregorie <martin@address-in-sig.invalid> - 2011-06-06 18:21 +0000
        Re: Managed-Code Bloat Michael Wojcik <mwojcik@newsguy.com> - 2011-06-08 11:48 -0400
          Re: Managed-Code Bloat Martin Gregorie <martin@address-in-sig.invalid> - 2011-06-08 18:06 +0000
            Re: Managed-Code Bloat Michael Wojcik <mwojcik@newsguy.com> - 2011-06-11 14:00 -0400
      Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 10:18 +1200
        Re: Managed-Code Bloat Michael Wojcik <mwojcik@newsguy.com> - 2011-06-08 11:59 -0400
      Re: Managed-Code Bloat Michael Wojcik <mwojcik@newsguy.com> - 2011-06-08 11:22 -0400
        Re: Managed-Code Bloat rossum <rossum48@coldmail.com> - 2011-06-08 21:45 +0100
    Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 10:17 +1200
      Re: Managed-Code Bloat Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-06-06 16:37 -0700
        Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 12:06 +1200
          Re: Managed-Code Bloat Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-06-06 17:44 -0700
            Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 13:38 +1200
              Re: Managed-Code Bloat Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-06-06 20:13 -0700
                Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 15:41 +1200
                Re: Managed-Code Bloat Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-06-06 20:47 -0700
                Re: Managed-Code Bloat BGB <cr88192@hotmail.com> - 2011-06-07 01:06 -0700
                Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 23:53 +1200
                Re: Managed-Code Bloat BGB <cr88192@hotmail.com> - 2011-06-07 16:04 -0700
                Re: Managed-Code Bloat Michael Wojcik <mwojcik@newsguy.com> - 2011-06-08 13:04 -0400
                Re: Managed-Code Bloat Michal Kleczek <kleku75@gmail.com> - 2011-06-08 09:23 +0200
                Re: Managed-Code Bloat BGB <cr88192@hotmail.com> - 2011-06-08 03:54 -0700
                Re: Managed-Code Bloat bugbear <bugbear@trim_papermule.co.uk_trim> - 2011-06-07 10:10 +0100
                Re: Managed-Code Bloat BGB <cr88192@hotmail.com> - 2011-06-07 00:37 -0700
      Re: Managed-Code Bloat Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-06-07 07:31 -0300
        Re: Managed-Code Bloat BGB <cr88192@hotmail.com> - 2011-06-07 16:18 -0700
          Re: Managed-Code Bloat Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-06-07 20:50 -0300
          Re: Managed-Code Bloat Gene Wirchenko <genew@ocis.net> - 2011-06-08 07:53 -0700
            Re: Managed-Code Bloat BGB <cr88192@hotmail.com> - 2011-06-08 11:23 -0700
    Re: Managed-Code Bloat BGB <cr88192@hotmail.com> - 2011-06-06 16:54 -0700
  Re: Managed-Code Bloat Roedy Green <see_website@mindprod.com.invalid> - 2011-06-06 19:24 -0700
    Re: Managed-Code Bloat Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 15:44 +1200

csiph-web