Out of curiosity, did FDAPM not prevent high CPU usage? Typically, you would run this in your FDAUTO.BAT
FDAPM /apmdos For example, that's what I use in my FDAUTO.BAT, and FDAPM /STATS shows the CPU is idle about half the time: C:\>fdapm /stats Performing action: STATS Found resident FDAPM / POWER driver version 1.0 Savings mode: BIOS APM plus interrupt hooks (MAX setting) CPU was idle 51% of the time But if I run an app (like As-Easy-As, to run a few calculations and a line-fit of some x-y data) then the CPU has more real work to do, so the CPU is idle only one-third the time after I exit the spreadsheet: D:\APP$\ASEASY>fdapm /stats Performing action: STATS Found resident FDAPM / POWER driver version 1.0 Savings mode: BIOS APM plus interrupt hooks (MAX setting) CPU was idle 33% of the time On Thu, Jun 11, 2026 at 8:06 AM Franco Martelli wrote: > > Hi everybody, > > I was affected by high CPU usage on my FreeDOS 1.4 virtual machine so, > after a web search, I found the utility DOSidle ¹ and after executed in > my FDAUTO.BAT it dramatically reduced the CPU usage of almost ten times. > > I think that DOSidle ¹ should be a must have for all machines that run a > DOS operating system on real or virtualization hardware. > > How about to bundle it in FreeDOS? Do you agree with my considerations? > Any criticism? > > regards, > > ¹ > https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/repositories/1.1/html/en/util/dosidle/20120922.4/index.html _______________________________________________ Freedos-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freedos-user
