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Groups > comp.sys.raspberry-pi > #25677

Re: AI and decompilation?

From Martin Gregorie <martin@mydomain.invalid>
Newsgroups comp.sys.raspberry-pi
Subject Re: AI and decompilation?
Date 2021-01-09 23:19 +0000
Organization A noiseless patient Spider
Message-ID <rtddlt$563$7@dont-email.me> (permalink)
References (21 earlier) <rtc8jo$ve5$1@dont-email.me> <rtcjan$563$4@dont-email.me> <rtcst0$ii9$2@dont-email.me> <rtcvlk$563$5@dont-email.me> <20210109210537.666d347abc90f6538d60abee@eircom.net>

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On Sat, 09 Jan 2021 21:05:37 +0000, Ahem A Rivet's Shot wrote:

> Of executable code, the Java Byte Code needs a JVM to run it and
> they tend to be memory hogs IME.
>
Its not that bad: everything I've written has run well on 32 bit 
hardware: in that environment under Linux the limit tends to be the 
process address space since I never set the swap partition to less that 
twice physical memory. 

In that environment the only time I've seen a Java program have memory 
problems is one of mine that loads potentially very large documents into 
a PostgreSQL DB. It pulls in a lot of library code too, including 
JavaMail, Mstor and the JDBC code needed to talk to PostgreSQL. In all 
cases failures due to running out of memory were the result of exceeding 
the -Xmm defined memory space, i.e. nothing to do with JVM or code size 
because every time that happened, the run was successful after I'd 
increased -Xmm. IIRC that box had around 500MB  of RAM.

Since moving it to a 64-bit system with 4GB RAM and explicitly setting -
xmm in the shell script that launches it I haven't hit and OOM problems 
with it.

This issue is no worse than running a large C++ program with dynamically 
loaded library code. In fact it might well be better since the JVM uses a 
JIT compiler to recompile frequently used Java classes to native code 
and, presumably, discards the P-code as soon as its been replaced by 
native code. 

Similarly, a Swing-based roster editor I wrote to support a club I belong 
to only occupies 1.3 MB of RAM with a little 4777 duty slots assigned: 
that's the complete roster of weekend duties over a six month season with 
14 duty assignments on each rostered day.

So, bottom line: I've developed and run fairly substantial Java programs 
on relatively small Linux boxes and never had issues with running out of 
memory.


-- 
--  
Martin    | martin at
Gregorie  | gregorie dot org

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Thread

AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-04 11:00 +0000
  Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-04 11:42 +0000
  Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-04 13:08 +0000
    Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-04 17:51 +0000
      Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-04 21:57 +0000
        Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-04 22:23 +0000
          Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 23:09 +0000
        Re: AI and decompilation? Dan Espen <dan1espen@gmail.com> - 2021-01-04 17:50 -0500
          Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-04 23:00 +0000
            Re: AI and decompilation? Peter Flass <peter_flass@yahoo.com> - 2021-01-04 16:59 -0700
            Re: AI and decompilation? J. Clarke <jclarke.873638@gmail.com> - 2021-01-04 20:42 -0500
              Re: AI and decompilation? Dan Espen <dan1espen@gmail.com> - 2021-01-04 20:59 -0500
            Re: AI and decompilation? Dan Espen <dan1espen@gmail.com> - 2021-01-04 20:55 -0500
              Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-05 10:38 +0000
                Re: AI and decompilation? Bob Eager <news0073@eager.cx> - 2021-01-05 12:46 +0000
                Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-05 13:43 +0000
                Re: AI and decompilation? Bob Eager <news0073@eager.cx> - 2021-01-05 14:23 +0000
                Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 15:22 +0000
                Re: AI and decompilation? Dan Espen <dan1espen@gmail.com> - 2021-01-05 09:05 -0500
            Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-05 10:51 +0000
              Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-05 11:52 +0000
              Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 12:06 +0000
              Re: AI and decompilation? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-05 20:12 +0000
          Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 11:45 +0000
            Re: AI and decompilation? Peter Flass <peter_flass@yahoo.com> - 2021-01-05 14:25 -0700
        Re: AI and decompilation? J. Clarke <jclarke.873638@gmail.com> - 2021-01-04 20:38 -0500
          Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 11:54 +0000
          Re: AI and decompilation? Peter Flass <peter_flass@yahoo.com> - 2021-01-05 14:06 -0700
            Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 22:52 +0000
        Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-05 10:29 +0000
  Re: AI and decompilation? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-04 11:05 -0500
    Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-04 17:07 +0000
      Re: AI and decompilation? scott@slp53.sl.home (Scott Lurndal) - 2021-01-04 17:52 +0000
        Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-05 10:28 +0000
          Re: AI and decompilation? Thomas Koenig <tkoenig@netcologne.de> - 2021-01-05 13:06 +0000
            Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-05 13:41 +0000
            Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 15:30 +0000
              Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-05 16:42 +0000
                Re: AI and decompilation? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-05 20:12 +0000
                Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 20:20 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-05 22:23 +0000
                Re: AI and decompilation? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-06 00:14 +0000
                Re: AI and decompilation? Eli the Bearded <*@eli.users.panix.com> - 2021-01-06 02:17 +0000
                Re: AI and decompilation? Björn Lundin <b.f.lundin@gmail.com> - 2021-01-08 14:39 +0100
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-08 15:07 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-08 15:56 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-08 15:35 +0000
                Re: AI and decompilation? Eli the Bearded <*@eli.users.panix.com> - 2021-01-08 20:02 +0000
                Re: AI and decompilation? Björn Lundin <b.f.lundin@gmail.com> - 2021-01-10 15:12 +0100
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-06 09:36 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-06 10:43 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-06 18:09 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-06 18:29 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-06 18:37 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-06 21:03 +0000
                Re: AI and decompilation? Björn Lundin <b.f.lundin@gmail.com> - 2021-01-08 14:45 +0100
                Re: AI and decompilation? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-08 18:06 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-08 18:44 +0000
                Re: AI and decompilation? A. Dumas <alexandre@dumas.fr.invalid> - 2021-01-09 03:02 +0000
                Re: AI and decompilation? A. Dumas <alexandre@dumas.fr.invalid> - 2021-01-09 02:58 +0000
                Re: AI and decompilation? Andy Burns <usenet@andyburns.uk> - 2021-01-06 18:35 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-06 18:39 +0000
                Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-06 19:03 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-06 19:08 +0000
                Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-06 19:19 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-07 04:07 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-07 12:59 +0000
                Re: AI and decompilation? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-08 21:41 -0500
                Re: AI and decompilation? Pancho <Pancho.Dontmaileme@outlook.com> - 2021-01-09 12:25 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-09 12:46 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-09 15:49 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-09 18:33 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-09 19:20 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-09 21:05 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-09 23:19 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-10 12:17 +0000
                Re: AI and decompilation? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-09 16:54 -0500
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-09 23:48 +0000
                Re: AI and decompilation? A. Dumas <alexandre@dumas.fr.invalid> - 2021-01-10 02:00 +0000
                Re: AI and decompilation? druck <news@druck.org.uk> - 2021-01-09 18:36 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-09 19:28 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-10 12:15 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-10 12:33 +0000
                Re: AI and decompilation? Andy Burns <usenet@andyburns.uk> - 2021-01-10 13:18 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-10 14:01 +0000
                Re: AI and decompilation? TimS <timstreater@greenbee.net> - 2021-01-10 15:14 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-10 13:59 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-10 14:46 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-10 15:34 +0000
                Re: AI and decompilation? Andy Burns <usenet@andyburns.uk> - 2021-01-10 15:05 +0000
                Re: AI and decompilation? Axel Berger <Spam@Berger-Odenthal.De> - 2021-01-10 17:28 +0100
                Re: AI and decompilation? Andy Burns <usenet@andyburns.uk> - 2021-01-11 17:25 +0000
                Re: AI and decompilation? TimS <timstreater@greenbee.net> - 2021-01-10 15:13 +0000
                Re: AI and decompilation? Andy Burns <usenet@andyburns.uk> - 2021-01-10 15:35 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-10 15:35 +0000
                Re: AI and decompilation? TimS <timstreater@greenbee.net> - 2021-01-10 17:23 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-10 18:17 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-11 03:44 +0000
                Re: AI and decompilation? TimS <timstreater@greenbee.net> - 2021-01-11 11:00 +0000
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-11 03:36 +0000
                Re: AI and decompilation? Andy Burns <usenet@andyburns.uk> - 2021-01-06 21:34 +0000
                Re: AI and decompilation? druck <news@druck.org.uk> - 2021-01-06 18:37 +0000
                Re: AI and decompilation? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-08 21:09 -0500
                Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-06 09:32 +0000
                Re: AI and decompilation? Björn Lundin <b.f.lundin@gmail.com> - 2021-01-08 14:56 +0100
            Re: AI and decompilation? Peter Flass <peter_flass@yahoo.com> - 2021-01-05 14:25 -0700
            Re: AI and decompilation? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2021-01-06 14:17 +0200
              Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-06 12:42 +0000
                Re: AI and decompilation? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2021-01-06 16:42 +0200
                Re: AI and decompilation? "Kerr-Mudd,John" <notsaying@127.0.0.1> - 2021-01-08 09:48 +0000
                Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-08 10:27 +0000
              Re: AI and decompilation? usenet@only.tnx (Questor) - 2021-01-08 21:40 +0000
          Re: AI and decompilation? Peter Flass <peter_flass@yahoo.com> - 2021-01-05 14:06 -0700
            Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-05 22:27 +0000
              Re: AI and decompilation? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-06 00:14 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-06 08:25 +0000
                Re: AI and decompilation? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-08 21:52 -0500
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-09 15:37 +0000
                Re: AI and decompilation? Peter Flass <peter_flass@yahoo.com> - 2021-01-10 06:40 -0700
              Re: AI and decompilation? scott@slp53.sl.home (Scott Lurndal) - 2021-01-06 15:15 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-06 16:09 +0000
                Re: AI and decompilation? scott@slp53.sl.home (Scott Lurndal) - 2021-01-06 17:07 +0000
                Re: AI and decompilation? Martin Gregorie <martin@mydomain.invalid> - 2021-01-06 17:38 +0000
          Re: AI and decompilation? druck <news@druck.org.uk> - 2021-01-05 21:20 +0000
    Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-04 17:47 +0000
    Re: AI and decompilation? Dan Espen <dan1espen@gmail.com> - 2021-01-04 14:18 -0500
      Re: AI and decompilation? Peter Flass <peter_flass@yahoo.com> - 2021-01-04 16:54 -0700
    Re: AI and decompilation? Theo <theom+news@chiark.greenend.org.uk> - 2021-01-04 23:01 +0000
  Re: AI and decompilation? Eli the Bearded <*@eli.users.panix.com> - 2021-01-04 20:11 +0000
  Re: AI and decompilation? Richard Kettlewell <invalid@invalid.invalid> - 2021-01-05 09:07 +0000
    Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-05 09:47 +0000
      Re: AI and decompilation? Richard Kettlewell <invalid@invalid.invalid> - 2021-01-05 11:13 +0000
        Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 12:12 +0000
          Re: AI and decompilation? Richard Kettlewell <invalid@invalid.invalid> - 2021-01-05 13:39 +0000
            Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 15:32 +0000
              Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 15:40 +0000
          Re: AI and decompilation? scott@slp53.sl.home (Scott Lurndal) - 2021-01-05 16:02 +0000
        Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-05 18:27 +0000
        Re: AI and decompilation? Vir Campestris <vir.campestris@invalid.invalid> - 2021-01-05 21:15 +0000
          Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 22:54 +0000
    Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 11:56 +0000
      Re: AI and decompilation? A. Dumas <alexandre@dumas.fr.invalid> - 2021-01-05 14:11 +0000
        Re: AI and decompilation? Bob Eager <news0073@eager.cx> - 2021-01-05 14:22 +0000
        Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 15:35 +0000
          Re: AI and decompilation? Ahem A Rivet's Shot <steveo@eircom.net> - 2021-01-05 18:47 +0000
            Re: AI and decompilation? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2021-01-05 20:15 +0000
    Re: AI and decompilation? J. Clarke <jclarke.873638@gmail.com> - 2021-01-05 07:32 -0500
    Re: AI and decompilation? scott@slp53.sl.home (Scott Lurndal) - 2021-01-05 16:00 +0000
  Re: AI and decompilation? Adrian Caspersz <email@here.invalid> - 2021-01-05 11:26 +0000
    Re: AI and decompilation? Thomas Koenig <tkoenig@netcologne.de> - 2021-01-05 13:07 +0000
      Re: AI and decompilation? The Natural Philosopher <tnp@invalid.invalid> - 2021-01-05 13:42 +0000
      Re: AI and decompilation? Eli the Bearded <*@eli.users.panix.com> - 2021-01-05 18:31 +0000
  Re: AI and decompilation? "K. Krause" <klemens.krause@gmx.net> - 2021-01-05 16:01 +0100
  Re: AI and decompilation? druck <news@druck.org.uk> - 2021-01-05 20:51 +0000
    Re: AI and decompilation? gareth evans <headstone255@yahoo.com> - 2021-01-05 22:51 +0000
      Re: AI and decompilation? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2021-01-08 22:23 -0500
  Re: AI and decompilation? Andy Burns <usenet@andyburns.uk> - 2021-02-12 15:40 +0000

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