From: erdmann@ibm.net
Subject: Re: Ada for OS/2 (was Re: Linux faster than OS/2...)
Date: 1997/07/04
Date: 1997-07-04T00:00:00+00:00 [thread overview]
Message-ID: <5phted$suk$1@unlisys.unlisys.net> (raw)
In-Reply-To: 5peljs$i2p$1@gonzo.sun3.iaf.nl
In <5peljs$i2p$1@gonzo.sun3.iaf.nl>, Geert Bosch <geert@gonzo.sun3.iaf.nl> writes:
>In comp.lang.ada system@niuhep.physics.niu.edu wrote:
> ``I would not necessily expect OS/2's compiler to have the same effeciency
> as Linux's. Assuming the hardware is identical the other question I have
> (not having read the original post) is whether you were running a GUI on
> Linux?''
>
>Please use emxload -e -gnat before doing any performance tests. This
>keeps the GNAT binaries in VM (real memory or swap space) instead
>of reloading and relocating them every time they are needed. This
>makes a huge difference in speed, esp. with small files.
>Because filesystem caching in Linux is better, this is less of an issue
>with Linux.
>
>Also keep in mind that you are mostly testing operating systems and I/O
>speed. The actual code that will be executed is almost the same, so given
>enough memory and fast enough I/O the performance will be not much
>different on Linux as on OS/2.
>
I have re done my tests again based on the information in mind i did receive
so far. The results for a 5 packages OS/2 PM program are:
OS/2 : 107 sec
Linux: 95 sec
In order to get this result i did close all windows of the WPS displaying
the filesystem. Now the difference in performance is about 10 percent. But
this seems to be the best!
Michael
next prev parent reply other threads:[~1997-07-04 0:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5ovqj1$4ul$1@unlisys.unlisys.net>
[not found] ` <5p06jo$c1r$2@elektron.et.tudelft.nl>
[not found] ` <5p38a7$2df$2@unlisys.unlisys.net>
[not found] ` <5p93ov$9ro@news.mr.net>
[not found] ` <5p9tpm$e90$1@unlisys.unlisys.net>
1997-07-01 0:00 ` Ada for OS/2 (was Re: Linux faster than OS/2...) system
1997-07-02 0:00 ` Robert Dewar
1997-07-02 0:00 ` system
1997-07-02 0:00 ` Robert Dewar
1997-07-02 0:00 ` Ralph Paul
1997-07-02 0:00 ` Jerry van Dijk
1997-07-02 0:00 ` Robert Dewar
1997-07-03 0:00 ` Matthieu Willm
1997-07-05 0:00 ` Michael Erdmann
1997-07-03 0:00 ` Geert Bosch
1997-07-04 0:00 ` Haug Buerger
1997-07-04 0:00 ` Robert Dewar
1997-08-18 0:00 ` Ada for OS/2 Geert Bosch
1997-08-19 0:00 ` Tarjei T. Jensen
1997-08-19 0:00 ` Robert Dewar
[not found] ` <33BEBF5C.367F@berlin.snafu.de>
1997-07-05 0:00 ` Ada for OS/2 (was Re: Linux faster than OS/2...) Robert Dewar
1997-07-06 0:00 ` Michael Erdmann
1997-07-04 0:00 ` erdmann [this message]
1997-07-04 0:00 ` Geert Bosch
1997-07-07 0:00 ` Michael Erdmann
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