From: "Etienne Baudin" <pfoxNO@SPAMfree.fr>
Subject: Re: fastest data structure
Date: Wed, 11 Dec 2002 16:02:52 +0100
Date: 2002-12-11T15:02:48+00:00 [thread overview]
Message-ID: <at7k2o$9fb$1@news-reader10.wanadoo.fr> (raw)
In-Reply-To: ScyJ9.313000$QZ.46513@sccrnsc02
Thanks for answers and the test program. I just modified My_type with a
record like that
type My_Type is record
un : Integer;
deux : Integer;
trois : Integer;
quatre : Integer;
cinq : Integer;
six : Integer;
end record;
and process:
procedure Processing (Data : My_Type ) is
value : Integer;
pragma Volatile( Value );
begin
value := data.un;
value := data.un;
value := data.un;
value := data.un;
end Processing;
and I obtained some weird results :
-- when I let the six components in My_type
Time for array based loop is 0.00151
Time for linked list based loop is 0.00175
-- with only 3 components in the record
Time for array based loop is 0.00109
Time for linked list based loop is 0.00112
--with only 1 component :
Time for array based loop is 0.00050
Time for linked list based loop is 0.00047
The process is the same with the 3 test (always reading "un") , and the
running time seems depend on the record size....??
Etienne Baudin
next prev parent reply other threads:[~2002-12-11 15:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-10 21:01 fastest data structure Etienne Baudin
2002-12-10 22:12 ` Victor Porton
2002-12-11 1:14 ` Jeffrey Carter
2002-12-11 3:23 ` SteveD
2002-12-11 13:03 ` Marin David Condic
2002-12-11 15:02 ` Etienne Baudin [this message]
2002-12-11 15:11 ` Lutz Donnerhacke
2002-12-11 19:04 ` tmoran
2002-12-12 4:22 ` SteveD
2002-12-12 12:40 ` P R Keeble
2002-12-14 16:23 ` Simon Wright
2002-12-17 0:33 ` Randy Brukardt
-- strict thread matches above, loose matches on Subject: below --
2002-12-10 21:51 Gautier direct_replies_not_read
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