Op Sat, 11 Jun 2005, schreef Christian Iversen:
On Friday 10 June 2005 17:16, Joost van der Sluis wrote:
Hi all,
I don't know if rtl-optimilisation patches have a large priority, but
nevertheless this patch improves the speed of the sysutils.uppercase and
lowercase functions.
A
Op Fri, 10 Jun 2005, schreef Florian Klaempfl:
Joost van der Sluis wrote:
Hi all,
I don't know if rtl-optimilisation patches have a large priority,
It depends if someone does it ;)
but
nevertheless this patch improves the speed of the sysutils.uppercase and
lowercase functions.
Op Sat, 11 Jun 2005, schreef Michael Van Canneyt:
On Sat, 11 Jun 2005, Daniël Mantione wrote:
Op Fri, 10 Jun 2005, schreef Florian Klaempfl:
Joost van der Sluis wrote:
Hi all,
I don't know if rtl-optimilisation patches have a large priority,
It depends if
Op Sat, 11 Jun 2005, schreef Daniël Mantione:
So, judge for yourself. I think this is worth the 256 byte lookup table.
?
0.948/0.999 = 95 %
So, we 5% speed improvement from using a table; this is much worse than I
thought and can easily be undone in real world by the increased cache
The attach fixes two problems I found reading pnm files:
- RGB files were not being read correctly
- byte values of 255 were overflowing.
I have adjusted the colour scaling to be compatible with what happens
for .BMP files. I have not been able to do much testing, as I am short
of files to
On Sat, 11 Jun 2005, Colin Western wrote:
The attach fixes two problems I found reading pnm files:
- RGB files were not being read correctly
- byte values of 255 were overflowing.
I have adjusted the colour scaling to be compatible with what happens for .BMP
files. I have not been able to
On Sat, 11 Jun 2005, Joost van der Sluis wrote:
If we're gonna hold a discussion like this for every optimilisation, it
isn't worth the effort imho. But now we're busy with it:
Well. Discussion is nice, but what does the real world show ?
To compare, I made 6 versions of Lowercase:
Op Sat, 11 Jun 2005, schreef Michael Van Canneyt:
On Sat, 11 Jun 2005, Joost van der Sluis wrote:
If we're gonna hold a discussion like this for every optimilisation, it
isn't worth the effort imho. But now we're busy with it:
Well. Discussion is nice, but what does the real world
On Sat, 11 Jun 2005, Danil Mantione wrote:
Op Sat, 11 Jun 2005, schreef Michael Van Canneyt:
On Sat, 11 Jun 2005, Joost van der Sluis wrote:
If we're gonna hold a discussion like this for every optimilisation, it
isn't worth the effort imho. But now we're busy with it:
Op Sat, 11 Jun 2005, schreef Michael Van Canneyt:
I'm not contesting that; but here I think that the use of pascal
is more important, for porting's sake.
As long as the Pascal version remains available (for exactly
the those portability reasons), I am not against it. Instead, I hope
someone
On Sat, 11 Jun 2005 13:33:57 +0200 (CEST), you wrote:
To compare, I made 6 versions of Lowercase:
Result on an AMD 64 3000:
Lowercase time to execute: 00:00:01.563
Lowercase2 Time to execute: 00:00:01.363
Lowercase3 Time to execute: 00:00:01.394
Lowercase4 Time to execute: 00:00:00.999
On Sat, 11 Jun 2005, Danil Mantione wrote:
Op Sat, 11 Jun 2005, schreef Michael Van Canneyt:
That is why I use pchar and one uniquestring;
It prevents all these automated uniquestring calls.
Isn't it a better idea to build a new string, i.e. we setlength result and
copy
On Saturday 11 June 2005 20:38, Daniël Mantione wrote:
Op Sat, 11 Jun 2005, schreef Christian Iversen:
With all the discussion about speed of lowercase/uppercase recently, I
thought I'd chip in. I don't have the time to actually implement and test
this, but I hope somebody else will.
Some more test results with PII 350MHz and
two additional implementations with lookup table:
Kylix:
lowercase execution time: 336887
lowercase 1 execution time: 380923
lowercase 2 execution time: 375411
lowercase 3 execution time: 369814
lowercase 4 execution time: 320665
lowercase 5 execution
Where do I find the cpu/cpu-timer unit guys...
Directory? Download link?
Thank you.
|
| On 12 Jun 2005, at 00:12, Martin Schreiber wrote:
|
| Some more test results with PII 350MHz and
| two additional implementations with lookup table:
|
| Try also with register variables on (-O???r), it
| Where do I find the cpu/cpu-timer unit guys...
| Directory? Download link?
|
| Thank you.
|
Is this the one? ;-)
http://members.yline.com/~tom_at_work/
|
| |
| | On 12 Jun 2005, at 00:12, Martin Schreiber wrote:
| |
| | Some more test results with PII 350MHz and
| | two additional
http://dennishomepage.gugs-cats.dk/LowerCaseChallenge.htm
LowerCaseShaPas2_c
This one here is in Pascal, using GOTO and LABEL which consistently work fast on
both -Og and -OG
But no one wants to maintain a GOTO and a LABEL..
[LowerCaseShaPas2_c] was slightly slower than [lowercase 6 ] (second
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