[Simh] several SIMH instances

Michael Unger unger at decus.de
Tue Dec 5 01:36:53 EST 2006


On 2006-12-04 23:04, "Kevin Handy" wrote:

> The current 'debug/test' version of simh has this OS idle loop code
> (it looks for specific code for each OS supported), but it doesn't
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> like Linux 2.6 due to the 250 HZ rate. Bypassing that test, it
> creates a VMS emulation that idles on my 600Mhz machine at
> < 1% of CPU usage when it's not doing anything. This is MUCH
  ^^^^^^^^^^^^^^^^^
> nicer than idling at 100%.

What about the situation when SIMH is started but an OS isn't booted
yet? I.e., is this code depending on a "counterpart" at the OS side?

> The idle-loop code can be turned on/off as desired.

Using 5...10% of the CPU resources would be acceptable as well (at least
for me) but 1% is much better of course.

Michael




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