Hi, On Sat, Mar 23, 2013 at 3:32 PM, john s wolter <johnswol...@wolterworks.com> wrote: > >> It's never going to be full speed nor perfect emulation. > > I'm aware an application running on FreeDOS inside of VirtualBox has to be > much slower. That said, understand the future of most legacy operating > systems that ran on older hardware will be inside virtual machines.
Dunno about the future. Honestly, most people probably would just throw it all away instead of trying hard to emulate it (which is tricky). If it's something they don't use (or sell or support), they don't care. :-( >> I know I sound like a broken record, but having VT-X enabled (if >> possible, esp. nested page tables or whatever) is the only best setup >> I know of. > > I'll see if that isn't already set to on, A.K.A "enabled". (An anti-jargon > statement :-) It's much much slower without VT-X. Quite painful, honestly. >> Probably best to try some (official or unofficial) benchmark, e.g. >> Dhrystone, doom -timedemo demo3 (for 1.9 shareware), or just timing >> some random cmdline program (runtime ..., esp. archiver or compressor) >> or DJGPP compile of something (redir -t gcc ...). >> >> I guess it depends on what you're trying to test (FPU, gfx, etc). > > Since M$-Windozes 7 seems to resist DOS program setup, I can't benchmark > them outside VirtualBox. The programs I have are all character based > display, that is not using bit-mapped graphics. Usually some compiled dbase > program with 10 to 20 open files. That's fine too. I was just saying there are various ways to benchmark in general. Simple integer performance is probably less buggy than other parts. >> Most of the issues are x86 emulation, then BIOS, then peripherals >> (mouse, keyboard, CD, etc). > > Then for VirtualBox the test is the x86 machine level emulation. How does > FreeDOS perform directly on hardware vs how it performs inside VirtualBox. Install to bootable USB via RUFUS, and test there. Then test under VBox and compare times. > The other obvious test is how FreeDOS performs on the likes of Amazon's EC2. Would maybe be interesting, but I have no idea how to try something like that. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
