Dear Tim, Still no news on a 32-bit version of DP itself, i.e. a version generated by a 32-bit compiler -using the same source code of DP-? If Lew Bastian has/had the source code, maybe someone can retrieve a 32-bit version of the compiler? Or is there a special reason that this approach could not work?
Danny From: [email protected] [mailto:[email protected]] On Behalf Of Tim Rude Sent: vrijdag 24 juli 2015 21:53 To: [email protected] Subject: Re: [Dataperf] Dataperfect and Windows 64bit Win7 After all this discussion, I decided to take another look at DP report execution times. First I decided to see if maybe I was running an old version of VDos. I've been running version 2014.04.06. Looking on the site I see there have been three releases since then, and the release notes report that some speed optimizations were made in VDos. Specifically: Version 2014.07.18: The emulated CPU gets more time to execute, so vDos will run faster. Version 2014.10.19: Simplified and stripped down the video/VGA drawing routines, they are also a bit faster now. Version 2014.10.19: Further optimization of CPU memory access functions, vDos is in overall a 25% faster (a 10% due to compiling for speed). So I installed the latest version (2015.04.10) to see how it compares with the earlier version I was running. I was hoping for some real improvements. But I found that the reports actually take *longer* to run under the new version of VDos than they did under the old version. I was totally not expecting that! For example, one report which uses two-level reports and subreports to generate an order summary consistently took about 52 seconds to run under the old version of VDos. Under the new version of VDos it consistently takes about 57 seconds. 5 seconds longer! To rule out any affects of disk-caching or memory-caching, I ran each report multiple times back-to-back and I came up with the same times with each run. Then, to compare the run times outside of VDos, I fired up MS Virtual PC running WinXP and opened up the exact same database. Imagine my surprise when the same report consistently took 73 seconds to run! Ok, next test was to run it in Windows 7's XPMode (using the same WinXP virtual machine) that I tried above. This time it consistently took about 70 seconds. Interesting that XPMode runs it faster than actually opening XP in VPC, but still way too slow. So props to VDos for at least trouncing the VPC times. Then I rebooted from a CD with a live version of XP on it. Ran the exact same database and the same report. It took 5 seconds to run. No that's not a typo. FIVE seconds. That's more than 10 times faster than under VDos and almost 15 times faster than under VPC/XP! I knew I remembered that my reports used to be much faster but I had forgotten just how much faster they were. :( Makes you wonder sometimes if it's really progress... Tim Rude On 7/23/2015 9:07 AM, Don Friedman wrote: Malkie - yes, I have VDos working on Win8 on my notebook, works fine. The "slow" problem carries to all the platforms I use it on, the developer isn't quite sure what is causing it but recognizes that it is there. Since it's not an issue across the board in general usage and doesn't seem to impact the more frequent uses of the product, has no particular reason to pursue it. Don Don Friedman ProfessionalRecords.Com LLC PRS Data Systems 205 S Main Street Pittsburgh, PA 15215 412-784-1600 - 1-800-PRS-FILE 412-784-1615 Fax On Thu, Jul 23, 2015 at 8:30 PM, barmag <[email protected]<mailto:[email protected]>> wrote: Likewise, I haven't experience VDos working slow on Win7-64bit. What about Windows 8? Would DP work at least like it does on Win7-64bit using VDos? Malkie > Thanks Tim and Don. > > My experience difference then is that I have not run any large reports in a > long time, and I don't > recall that I've even exported and reloaded a large dataset since using vDos. > > Don > > On 23/07/2015 12:56 AM, Don Friedman wrote: > Dan - all that is true. However, in my experience there are other > functions that are terribly > slow, so slow in fact that I keep other older machines around to run > those routines. Of > course, I'm talking about larger databases. Imports and the running of > reports come to > mind. I once measured the same report running under VDos and straight > from DOS > (mounted on a Vista machine) - my DOS report ran in about 20 minutes, > under VDos it > took almost two hours. I gave up trying to import large datasets under > VDos for the same > reason. > Otherwise, I really enjoy having VDos available to me and use it for > functions that don't > require speed - report writing, building panels, inquiries of a lookup > nature and the like. It > is solid as a rock as far as I can tell. Then again, I lead a relatively > uncomplicated data life > and never print from DP. > > Don Don Friedman > ProfessionalRecords.Com LLC > PRS Data Systems > 205 S Main Street > Pittsburgh, PA  15215 > 412-784-1600<tel:412-784-1600> - 1-800-PRS-FILE > 412-784-1615<tel:412-784-1615> Fax > > > > > > On Wed, Jul 22, 2015 at 9:52 PM, Don Codling > <[email protected]<mailto:[email protected]>> wrote: > I don't understand why you say vDos slows down DP, Tim. DP is greased > lightning for me > running vDos on Win 7 - 64 bit. I don't think I've run any really large > reports since starting > to work DP on vDos, but it loads virtually instantly - less than a > second, and switches from > one to another database even faster, if possible, opens pages faster than > I can time it ... > > Don Codling > > On 22/07/2015 6:48 PM, Tim Rude wrote: > DP (and any other 16-bit DOS app) will not run natively under Win-7 > 64-bit. The > 32-bit OS can run 16-bit apps. > > To run under 64-bit Windows you have to use a DOS emulator like VDOS. Or > you > can run a virtual machine (using Virtual PC, VirtualBox, etc.) with a > compatible > OS installed and run DP inside it. VDOS is simplest but does slow DP down > a bit. > > On 7/22/2015 10:30 AM, Jens Thorvald Høeg wrote: > Dear ALL > There was just a related question. Sorry to ask what has already been > discussed I believe but > > 1) Can you run Dataperfect under WIN-7 64 bit (it runs under 32 bit of > course, I do that) > > 2) If so, what do you have to do? > > Best regards > > Jens using Dataperfect since 1989! > > > Jens T Høeg, dr,scient, ph.d. > Always remember Chelmno, Belzec, Sobibor, Treblinka, Majdanek and > Auschwitsch > Marine Biology Section - Department of Biology > University of Copenhagen > Universitetsparken 4 - DK-2100 > Copenhagen DENMARK > +45 28751247<tel:%2B45%2028751247> > [email protected]<mailto:[email protected]> > > > _______________________________________________ > Dataperf mailing list > [email protected]<mailto:[email protected]> > http://lists.dataperfect.nl/cgi-bin/mailman/listinfo/dataperf > > > > > _______________________________________________ > Dataperf mailing list > [email protected]<mailto:[email protected]> > http://lists.dataperfect.nl/cgi-bin/mailman/listinfo/dataperf > > > > _______________________________________________ > Dataperf mailing list > [email protected]<mailto:[email protected]> > http://lists.dataperfect.nl/cgi-bin/mailman/listinfo/dataperf > > > > > _______________________________________________ Dataperf mailing list [email protected]<mailto:[email protected]> http://lists.dataperfect.nl/cgi-bin/mailman/listinfo/dataperf _______________________________________________ Dataperf mailing list [email protected]<mailto:[email protected]> http://lists.dataperfect.nl/cgi-bin/mailman/listinfo/dataperf
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