[Info-vax] clock problems with OpenVMS x86 on VirtualBox

Arne Vajhøj arne at vajhoej.dk
Fri May 12 20:18:40 EDT 2023


On 5/12/2023 8:41 AM, bill wrote:
> On 5/12/2023 8:14 AM, Simon Clubley wrote:
>> On 2023-05-12, Jan-Erik Söderholm <jan-erik.soderholm at telia.com> wrote:
>>> Actually, that was how I thought it worked. Since I observed that
>>> the clock in my VirtualBox VMS environment lagge a bit behind
>>> but each 10-20 sec, it jumpt ahead and skipped a second so that
>>> it become in sync with the host Windows environment again.
>>
>> That's going to make for some "interesting" real-time program 
>> behaviour... :-)
> 
> Does VMS still claim to be an RTOS?  Did it ever (there was VAXELN)?

I don't think it ever has.

But 30 years ago most believed that VMS had better
real time characteristics than Unix.

Arne




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