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From: Geoff Bull <geoff@research.canon.com.au>
Subject: Re: Ammo-zilla
Date: 1999/11/01
Date: 1999-11-01T02:58:29+00:00	[thread overview]
Message-ID: <381D01EC.429FF03B@research.canon.com.au> (raw)
In-Reply-To: 7vco1c$ohs@drn.newsguy.com

mike@home wrote:
> 
> In article <7vc2er$128q$1@news.gate.net>, "David says...
> 
> >I often wished when writing Java code that I could force the JVM to clean up
> >what I wanted, when I wanted.
> >
> >David Botton
> 
> you can do that. just call the gc(). to clean you local objects, assign
> 'null' to them first.
> 
Explicitly calling the GC is VERY expensive, so you really
don't want to do it more often than necessary - and
the JVM knows when it is necessary.

For the Java I write, performance is important, and I find
myself programming to avoid the GC.
For "hot" classes I allocate a pool of objects up front,
then reuse them, instead of leaving them to the GC.
I also give the JVM heaps of memory.

BTW, has anybody noticed that Java finalization is broken.
System.runFinalizersOnExit is deprecated, so you can't
tell if finalizers will ever be run - making them almost
completely useless.




  parent reply	other threads:[~1999-11-01  0:00 UTC|newest]

Thread overview: 92+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-10-23  0:00 Ammo-zilla Stanley R. Allen
1999-10-24  0:00 ` Ammo-zilla Robert Dewar
1999-10-24  0:00   ` Ammo-zilla David Botton
1999-10-24  0:00 ` Ammo-zilla Aidan Skinner
1999-10-24  0:00   ` Ammo-zilla Robert Dewar
1999-10-24  0:00     ` Ammo-zilla David Botton
1999-10-28  0:00       ` Ammo-zilla Charles Hixson
1999-10-28  0:00         ` Ammo-zilla Matthew Heaney
1999-10-28  0:00           ` Ammo-zilla mitch
1999-10-29  0:00             ` Ammo-zilla Matthew Heaney
1999-10-28  0:00         ` Ammo-zilla Tucker Taft
1999-10-31  0:00           ` Ammo-zilla Brian Rogoff
1999-11-01  0:00             ` Ammo-zilla Robert Dewar
1999-11-01  0:00               ` Ammo-zilla Brian Rogoff
1999-11-02  0:00                 ` Ammo-zilla Robert Dewar
1999-11-02  0:00                   ` Ammo-zilla Brian Rogoff
1999-11-02  0:00               ` Ammo-zilla Robert A Duff
1999-10-28  0:00         ` Ammo-zilla Laurent Guerby
1999-10-28  0:00           ` Ammo-zilla Charles Hixson
1999-10-29  0:00             ` Ada and GC (Was Re: Ammo-zilla) Vladimir Olensky
1999-10-29  0:00               ` David Botton
1999-10-31  0:00                 ` Vladimir Olensky
1999-10-30  0:00                   ` Samuel T. Harris
1999-10-30  0:00                     ` David Botton
1999-10-28  0:00           ` Ammo-zilla David Starner
1999-10-29  0:00             ` Ammo-zilla Larry Kilgallen
1999-10-29  0:00               ` Ammo-zilla David Starner
1999-10-29  0:00                 ` Ammo-zilla Matthew Heaney
1999-10-29  0:00                   ` Ammo-zilla Charles Hixson
1999-10-29  0:00                 ` Ammo-zilla David Botton
1999-10-29  0:00                   ` Ammo-zilla mike
1999-10-29  0:00                     ` Ammo-zilla David Botton
1999-10-31  0:00                     ` Ammo-zilla Robert Dewar
1999-11-02  0:00                       ` Ammo-zilla Charles Hixson
1999-11-03  0:00                         ` Ammo-zilla Wes Groleau
1999-11-01  0:00                     ` Geoff Bull [this message]
1999-10-29  0:00                 ` Ammo-zilla Tucker Taft
1999-10-30  0:00                   ` Ammo-zilla Lutz Donnerhacke
1999-10-31  0:00                 ` Ammo-zilla Robert Dewar
1999-10-31  0:00                   ` Garbage colletion Lutz Donnerhacke
1999-11-01  0:00                     ` Robert Dewar
1999-11-01  0:00                       ` Lutz Donnerhacke
1999-11-01  0:00                     ` Robert Dewar
1999-11-01  0:00                       ` Lutz Donnerhacke
1999-11-01  0:00                         ` Robert Dewar
1999-11-04  0:00                           ` Didier Utheza
1999-11-04  0:00                             ` David Starner
1999-11-01  0:00                       ` Gnat IDE (was: Garbage colletion) Ted Dennison
1999-11-01  0:00                     ` Garbage colletion Larry Kilgallen
1999-10-31  0:00                 ` Ammo-zilla Robert Dewar
1999-10-31  0:00                   ` Ammo-zilla David Starner
1999-11-01  0:00                     ` Ammo-zilla Robert Dewar
1999-11-01  0:00                     ` Ammo-zilla Robert Dewar
1999-11-01  0:00                     ` Ada and GC. Was: Ammo-zilla Vladimir Olensky
1999-11-01  0:00                       ` Vladimir Olensky
1999-11-01  0:00                       ` Tucker Taft
1999-11-02  0:00                         ` Robert Dewar
1999-11-02  0:00                           ` Charles Hixson
1999-11-03  0:00                             ` Robert Dewar
1999-11-03  0:00                               ` Charles Hixson
1999-11-02  0:00                         ` Vladimir Olensky
1999-11-01  0:00                   ` Ammo-zilla Robert A Duff
1999-11-01  0:00                     ` Ammo-zilla Robert Dewar
1999-11-02  0:00                       ` Ammo-zilla Robert A Duff
1999-11-02  0:00                         ` Ammo-zilla Robert Dewar
1999-11-03  0:00                           ` Ammo-zilla Vladimir Olensky
1999-11-03  0:00                             ` Ammo-zilla Robert Dewar
1999-11-04  0:00                               ` Ada GC (was Re: Ammo-zilla) Vladimir Olensky
1999-11-06  0:00                                 ` Robert Dewar
1999-11-06  0:00                                   ` Vladimir Olensky
1999-11-06  0:00                                     ` Robert Dewar
1999-11-06  0:00                                     ` Vladimir Olensky
1999-11-09  0:00                                     ` Robert A Duff
1999-11-10  0:00                                       ` Vladimir Olensky
1999-11-10  0:00                                         ` Richard D Riehle
1999-11-10  0:00                                           ` Nick Roberts
1999-11-12  0:00                                             ` Robert I. Eachus
1999-11-12  0:00                                               ` Didier Utheza
1999-11-12  0:00                                             ` Robert Dewar
1999-11-10  0:00                                           ` Robert A Duff
1999-11-12  0:00                                           ` Robert I. Eachus
1999-11-04  0:00                             ` Ada GC (was Ammo-zilla) Nick Roberts
1999-11-04  0:00                               ` Wes Groleau
1999-11-01  0:00                     ` Ammo-zilla Vladimir Olensky
1999-10-30  0:00             ` Ammo-zilla Lutz Donnerhacke
1999-10-30  0:00               ` Ammo-zilla Matthew Heaney
1999-10-31  0:00             ` Ammo-zilla Robert Dewar
1999-10-29  0:00           ` Ammo-zilla Robert I. Eachus
1999-10-31  0:00         ` Ammo-zilla Robert Dewar
1999-10-24  0:00     ` Ammo-zilla Aidan Skinner
1999-10-25  0:00       ` Ammo-zilla Jean-Pierre Rosen
1999-10-24  0:00     ` Ammo-zilla Matthew Heaney
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