Re: Good Linux to start with

From	blmblm@myrealbox.com <blmblm.myrealbox@gmail.com>
Newsgroups	comp.os.linux.misc
Subject	Re: Good Linux to start with
Date	2011-07-10 19:01 +0000
Organization	None
Message-ID	<97ub7kFag8U1@mid.individual.net> (permalink)
References	<a19b0ebc-20c4-443e-8a39-b8ae8a8cbc02@u19g2000vbi.googlegroups.com> <87mxgqbheu.fsf@araminta.anjou.terraraq.org.uk> <gnva17hvitmnoag2hfh594ui1po575ce8a@4ax.com> <87box6bcuk.fsf@araminta.anjou.terraraq.org.uk>

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(Late to the party, maybe, but I hadn't been following this thread
until its longevity made me curious .... )

In article <87box6bcuk.fsf@araminta.anjou.terraraq.org.uk>,
Richard Kettlewell  <rjk@greenend.org.uk> wrote:
> Mark <i@dontgetlotsofspamanymore.invalid> writes:
> > Richard Kettlewell <rjk@greenend.org.uk> wrote:
> >> Aragorn <stryder@telenet.be.invalid> writes:
> 
> >>> Especially if you know how slow bytecode is.  Just look at Java. ;-)
> >>
> >> A couple of years back I did a comparison between some simple integer
> >> computation-heavy C (compiled with gcc -O2 for then-current GCC) and the
> >> equivalent C# compiled to CIL bytecode.
> >>
> >> The C#/CIL version ran measurably faster.

Just for fun (based on a mention of sorting in another post in this
subthread) I just tried writing a simple selection sort in C and Java,
and indeed -- in some environments the Java version was actually
faster, which rather surprised me, and when it wasn't faster, the
slowdown compared to C was, hm, I'm too lazy to compute it, but a
factor of 1-point-something.

> > I guess YMMV applies.  Some code to parse & validate messages was
> > ported from C to Java and it runs considerably slower and uses a lot
> > more memory.
> 
> The point is that the implication that bytecodes are inherently slow is
> simply wrong.  

Another key point is that, AIUI, all (most?) current implementations
of Java actually compile bytecode to native code at runtime.
Supposedly this can actually produce native code faster than that
produced by an optimizing compiler, since the compilation can
take into account details of the environment.  But in any case
it means that what's actually happening at runtime is not the
naive interpretation of byte code done (again AIUI) by early
implementations -- which *were* slow, apparently leading many people
to form opinions that could now use an update.  Just sayin'.

> The fact that you can construct a Java program that's
> slower than a functionally equivalent C program is neither here nor
> there; one could construct two functionally equivalent C programs with
> very different performance characteristics, too.

-- 
B. L. Massingill
ObDisclaimer:  I don't speak for my employers; they return the favor.

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Thread

Good Linux to start with Halberstam Reader <joe.snod@yahoo.com> - 2011-07-03 18:40 -0700
  Re: Good Linux to start with John Hasler <jhasler@newsguy.com> - 2011-07-03 20:53 -0500
  Re: Good Linux to start with bosco <boscopelone@yahoo.com> - 2011-07-03 21:16 -0600
    Re: Good Linux to start with bruce.sinclair@NOSPAMORELSEagresearch.NOTco.NOTnz (Bruce Sinclair) - 2011-07-04 04:07 +0000
  Re: Good Linux to start with Dan C <youmustbejoking@lan.invalid> - 2011-07-04 03:28 +0000
    Re: Good Linux to start with Michael Black <et472@ncf.ca> - 2011-07-04 12:04 -0400
      Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-04 23:07 +0200
  Re: Good Linux to start with David Brown <david@westcontrol.removethisbit.com> - 2011-07-04 10:15 +0200
  Re: Good Linux to start with Bob Henson <rh547477@gmail.com> - 2011-07-04 10:00 +0100
  Re: Good Linux to start with Torsten Mueller <dev-null@shared-files.de> - 2011-07-04 11:10 +0200
    Re: Good Linux to start with Balwinder S Dheeman <bsd.SANSPAM@anu.homelinux.net> - 2011-07-04 16:11 +0530
  Re: Good Linux to start with Richard Kimber <richardkimber@btinternet.com> - 2011-07-04 06:59 -0500
    Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-04 13:35 +0100
      Re: Good Linux to start with David Brown <david@westcontrol.removethisbit.com> - 2011-07-04 15:25 +0200
    Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-05 11:41 +0100
  Re: Good Linux to start with jmclnx@SPAMisBADgmail.com (Jack McCue) - 2011-07-04 12:50 +0000
  Re: Good Linux to start with Keith Keller <kkeller-usenet@wombat.san-francisco.ca.us> - 2011-07-04 07:47 -0700
  Re: Good Linux to start with ray <ray@zianet.com> - 2011-07-04 14:50 +0000
  Re: Good Linux to start with Stefan Patric <not@this.address.com> - 2011-07-04 17:23 +0000
    Re: Good Linux to start with Steve Hayes <hayesstw@telkomsa.net> - 2011-07-05 07:39 +0200
      Re: Good Linux to start with JohnT <john@example.com> - 2011-07-05 07:52 +0000
        Re: Good Linux to start with Robert Riches <spamtrap42@jacob21819.net> - 2011-07-05 15:51 +0000
        Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-06 03:46 +0200
          Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-07 22:35 +0200
            Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-07 23:06 +0200
              Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-08 13:44 +0200
                Re: Good Linux to start with Hans Georg Schaathun <hg@schaathun.net> - 2011-07-13 08:58 +0100
                Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-13 09:41 +0100
                Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-13 10:07 +0100
                Re: Good Linux to start with Hans Georg Schaathun <hg@schaathun.net> - 2011-07-13 12:46 +0100
                Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-13 13:47 +0100
                Re: Good Linux to start with Hans Georg Schaathun <hg@schaathun.net> - 2011-07-13 14:20 +0100
                Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-13 15:26 +0100
                Re: Good Linux to start with John Hasler <jhasler@newsguy.com> - 2011-07-13 07:37 -0500
                Re: Good Linux to start with Hans Georg Schaathun <hg@schaathun.net> - 2011-07-13 14:16 +0100
                Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-13 14:35 +0100
                Re: Good Linux to start with Hans Georg Schaathun <hg@schaathun.net> - 2011-07-13 15:13 +0100
                Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-13 16:36 +0100
            Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-08 08:53 +0100
              Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-08 14:09 +0200
  Re: Good Linux to start with Anton Meyninger <anton.meyninger@gmail.com> - 2011-07-05 13:07 +0200
    Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-06 03:52 +0200
      Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-06 12:16 +0100
        Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-06 19:10 +0200
          Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-06 18:30 +0100
            Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-07 01:57 +0200
              Re: Good Linux to start with Robert Riches <spamtrap42@jacob21819.net> - 2011-07-07 03:26 +0000
                Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-07 05:48 +0100
                Re: Good Linux to start with Balwinder S Dheeman <bsd.SANSPAM@anu.homelinux.net> - 2011-07-07 11:15 +0530
                Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-07 07:14 +0100
              Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-07 05:45 +0100
              Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-07 09:53 +0100
                Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-07 10:41 +0100
                Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-07 11:32 +0100
                Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-07 13:49 +0100
                Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-07 15:01 +0100
                Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-07 15:16 +0100
                Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-07 23:04 +0200
                Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-08 08:58 +0100
                Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-08 14:19 +0200
                Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-08 13:44 +0100
                Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-11 09:39 +0100
                Re: Good Linux to start with blmblm@myrealbox.com <blmblm.myrealbox@gmail.com> - 2011-07-10 19:02 +0000
                Re: Good Linux to start with blmblm@myrealbox.com <blmblm.myrealbox@gmail.com> - 2011-07-10 19:01 +0000
            Re: Good Linux to start with Robert Riches <spamtrap42@jacob21819.net> - 2011-07-07 03:16 +0000
              Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-07 05:47 +0100
                Re: Good Linux to start with Robert Riches <spamtrap42@jacob21819.net> - 2011-07-07 05:00 +0000
          Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-07 22:42 +0200
            Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-07 23:41 +0200
              Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-08 14:07 +0200
                Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-09 02:05 +0200
                Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-09 21:10 +0200
                Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-10 02:16 +0200
                Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-10 10:42 +0100
                Re: Good Linux to start with Aragorn <stryder@telenet.be.invalid> - 2011-07-11 05:03 +0200
                Re: Good Linux to start with The Natural Philosopher <tnp@invalid.invalid> - 2011-07-11 08:23 +0100
                Re: Good Linux to start with Mark <i@dontgetlotsofspamanymore.invalid> - 2011-07-11 09:52 +0100
                Re: Good Linux to start with Richard Kettlewell <rjk@greenend.org.uk> - 2011-07-11 11:16 +0100
                Re: Good Linux to start with Robert Riches <spamtrap42@jacob21819.net> - 2011-07-10 03:49 +0000
                Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-11 13:56 +0200
                Re: Good Linux to start with blmblm@myrealbox.com <blmblm.myrealbox@gmail.com> - 2011-07-11 22:31 +0000
                Re: Good Linux to start with "Peter J. Holzer" <hjp-usenet2@hjp.at> - 2011-07-12 15:30 +0200
                Re: Good Linux to start with blmblm@myrealbox.com <blmblm.myrealbox@gmail.com> - 2011-07-12 22:28 +0000
  Re: Good Linux to start with Feranija <feranija@net...> - 2011-07-06 11:37 -0700
  Re: Good Linux to start with TJ <TJ@noneofyour.business> - 2011-07-18 09:35 -0400

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