jdb@reef.cis.ufl.edu (Brian K. W. Hook) (03/10/91)
Has anyone felt a noticeable difference between running Borland C++ in and out of protected mode. I ran some bench marks of the BCC and BCCX and got times within 10% of each other most of the time: 8K file included Windows.h prcompiled headers on 24 SECONDS using BCC " " BCX 13 SECONDS using BCC -Qe or -Qx This is with 33mhz 386, 8MB of RAM, configured as follows: 2MB disk cache (NCACHE-F EXT=2048) 1MB for DOS (+384K of shadowing) 5MB for whatever else wants it, configured as XMS I have tried using -Qx, -Qe, BC, BCCX, BCX, BCC, and disabling/enabling a greater cache and I have YET to notice major increases in speed! One other note....one of the .PRJ files for Windows that came with it compiled in 20 minuites!! It ran out of memory in about 1 minute, (before it finished the include files) and spent the rest of the time swapping. I don't even remember which one it was! This is NTO a good a sign...\ Brian
LIBCRN@BYUVM.BITNET (03/12/91)
========================================================================= >Has anyone felt a noticeable difference between running Borland C++ in >and out of protected mode. I ran some bench marks of the BCC and BCCX >and got times within 10% of each other most of the time: >8K file >included Windows.h >prcompiled headers on >24 SECONDS using BCC >" " BCX >13 SECONDS using BCC -Qe or -Qx >This is with 33mhz 386, 8MB of RAM, configured as follows: >2MB disk cache (NCACHE-F EXT=2048) >1MB for DOS (+384K of shadowing) >5MB for whatever else wants it, configured as XMS >I have tried using -Qx, -Qe, BC, BCCX, BCX, BCC, and disabling/enabling a >greater cache and I have YET to notice major increases in speed! In the post that I made which asked about running BCX within Windows (again I apologize for wasting bandwidth on a question that I should have solved myself by reading the manual), I listed compile-and-link times for two simple Windows programs. The difference that I saw was VERY NOTICEABLE. In case you missed my earlier post, here are the numbers again: PARTY.C (from Petzold's "Programming Windows" book): BC -- 5.5 minutes. BCX -- 16 seconds. WHELLO.CPP (from Borland's sample programs) BC -- 8 minutes (that's right EIGHT MINUTES!) BCX -- 40 seconds. Of course my machine isn't nearly as monstrous as yours so you may not get the same type of results as I did. My hardware is much more modest: * * IBM PS/2 Model 55sx with 4 Mbytes of memory. * * >Brian --Cory (libcrn@byuvm.bitnet)