Re: Performance - DOS mode contra GUI . - Article 523 - go-pugleaf

Article View: comp.lang.pascal.delphi.misc

Article #523

Back to comp.lang.pascal.delphi.misc Previous Next

Re: Performance - DOS mode contra GUI .

#523

From: Martin Harvey
Date: Fri, 18 Aug 2000 00:00

17 lines
1664 bytes

"Klaus J. Koch" wrote:
> 
> The other day I spent my time to convert 3 lines of pascal code into
> more than 50 lines of highly optimized assembler code avoiding slow
> commands as loops, jumps, calls, and pushs, and it ended up in
> taking 5 per cent _more_ cpu time than the compiler generated code.

3 lines of pascal should be a lot less assembler than that ... loops and
jumps are not normally expensive provided you write them in such a way
that the branch prediction algorithms in the processor get them right.

MH.

--
Martin Harvey. martin@pergolesi.demon.co.uk
     http://www.pergolesi.demon.co.uk
               ICQ: 37298917

Technical Details

Message-ID: <399C88FC.410AFB28@pergolesi.demon.co.uk>

Path: arc1-ca.pugleaf.net!unknown!not-for-mail

References: <u8mm5.822$0L1.13011@news010.worldonline.dk> <399b304d$0$1695@heracles> <7k26wEf91hB@klaus.mr.he.schule.de>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 1091e5,8b5ff9f09340286e
X-Google-Attributes: gid1091e5,public
X-Google-Thread: fd817,8b5ff9f09340286e
X-Google-Attributes: gidfd817,public
X-Google-Thread: 10baee,8b5ff9f09340286e
X-Google-Attributes: gid10baee,public
From: Martin Harvey <martin@pergolesi.demon.co.uk>
Subject: Re: Performance - DOS mode contra GUI .
Date: 2000/08/18
Message-ID: <399C88FC.410AFB28@pergolesi.demon.co.uk>
X-Deja-AN: 659733125
Content-Transfer-Encoding: 7bit
X-NNTP-Posting-Host: pergolesi.demon.co.uk:158.152.20.186
References: <u8mm5.822$0L1.13011@news010.worldonline.dk> <399b304d$0$1695@heracles> <7k26wEf91hB@klaus.mr.he.schule.de>
X-Accept-Language: en
Content-Type: text/plain; charset=us-ascii
X-Complaints-To: abuse@demon.net
X-Trace: news.demon.co.uk 966606832 nnrp-01:2190 NO-IDENT pergolesi.demon.co.uk:158.152.20.186
MIME-Version: 1.0
Newsgroups: comp.lang.pascal.delphi.misc,alt.comp.lang.borland-delphi,borland.public.delphi.winapi

Reply to Parent Message