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From: Jakob Heinemann <jakob.heinemann@ericsson.com>
Subject: GNAT: Performance of String functions
Date: 1997/07/18
Date: 1997-07-18T00:00:00+00:00	[thread overview]
Message-ID: <33CF3908.3DF62EEE@ericsson.com> (raw)


Hello Gnaters.

I wonder if there exist some data concerning speed issuses 
on different types of string handling. To be specific what
type och string mechanism is considered fastest and how big
is the difference between strings, bounded strings an unbounded
strings? Speed measurement in comparing two strings, passing
as a parameter, passing as a parameter to procedure in another
package. 

I'm running GNAT 3.09 on a Sun Sparc Ultra 1 with Solaris 2.5.
I'm using unbounded strings and I'm comparing a lot. In fact
I have an equvalent program running the same algoritm in VAX
Pascal, and on the VAX the program runs about ten times faster.
Can I expect a dramatic speed improvement if I use another
string concept or is GNAT just slow?

Hope someone can help me with this question

/Jakob

PS: Please maka a CC: to me.

mailto:Jakob.Heinemann@ericsson.com
ESB
Linkoping, Sweden




             reply	other threads:[~1997-07-18  0:00 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1997-07-18  0:00 Jakob Heinemann [this message]
1997-07-18  0:00 ` GNAT: Performance of String functions Robert Dewar
1997-07-19  0:00   ` Tarjei T. Jensen
1997-07-19  0:00     ` Matthew Heaney
1997-07-20  0:00     ` Tarjei T. Jensen
1997-07-20  0:00     ` Robert Dewar
1997-07-20  0:00       ` Tarjei T. Jensen
1997-07-20  0:00         ` Robert Dewar
1997-07-21  0:00           ` Tucker Taft
1997-07-21  0:00             ` Robert Dewar
1997-07-21  0:00             ` Tarjei Jensen
1997-07-21  0:00               ` Matthew Heaney
1997-07-22  0:00               ` Robert Dewar
1997-07-22  0:00                 ` Tarjei Jensen
1997-07-22  0:00                   ` Larry Kilgallen
1997-07-22  0:00                     ` Tarjei T. Jensen
1997-07-23  0:00                       ` Robert Dewar
1997-07-23  0:00                         ` Tarjei Jensen
1997-07-23  0:00                           ` Samuel Mize
1997-07-23  0:00                             ` W. Wesley Groleau x4923
1997-07-24  0:00                             ` Robert A Duff
1997-07-24  0:00                           ` Mats Weber
1997-07-24  0:00                             ` Matthew Heaney
1997-07-24  0:00                             ` Tarjei Jensen
1997-07-24  0:00                               ` Matthew Heaney
1997-07-24  0:00                               ` Robert Dewar
1997-07-24  0:00                             ` Robert Dewar
1997-07-28  0:00                               ` Mats Weber
1997-07-28  0:00                                 ` Matthew Heaney
1997-07-29  0:00                                   ` Robert Dewar
1997-07-28  0:00                                 ` Robert Dewar
1997-07-28  0:00                                   ` Robert Dewar
1997-07-23  0:00                       ` Larry Kilgallen
1997-07-22  0:00                   ` Robert Dewar
1997-07-22  0:00   ` Jakob Heinemann
1997-07-23  0:00     ` Robert Dewar
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