[Simh] idle on VMS and Windows

[Thomas Pfau]

Thomas Pfau wrote:
> Phil Brett wrote:
>   
>> Anyway, back to the question. I've set cpu idle=VMS in the emulator and it
>> seems to have no effect. It's the top line in a vax.ini file I use. Well,
>> I
>> say it has no effect...it did work once and the emulator idled nicely at
>> 1%
>> cpu on the XP box. Other times it uses 20% of the CPU (it's a
>> hyperthreaded
>> dual processor box), and other times 25% (as if the idle hasn't been set).
>> I
>> can't as yet see a pattern. Show cpu shows idle enabled=VMS when asked.
>>     
>
> I have had some strange results with VMS idle detection as well. 
> Sometimes I can boot the emulator and it consumes 100% of a cpu.  I shut
> it down and immediately reboot without changing anything and the idle
> detection works fine.  I think it got better when I raised one of the
> parameters.  I can post my vax.ini when I get home from work.
>   
The parameter I changed to get idling to work better was IDLE_WAIT.  I
added the following line to my vax.ini.

DEP IDLE_WAIT 1500

I believe the default is 1000.