[Info-vax] CRTL and RMS vs SSIO

[Stephen Hoffman]

On 2021-10-18 00:18:05 +0000, Simon Clubley said:

> And Sector 7 (and others IIRC) have done various pieces of this, yet 
> there's still a market for real VMS systems.

FreeVMS, as well.

By the time VSI could get all the APIs across to Linux, it's a ~decade 
added to the VSI schedule, and with ~little forward progress elsewhere 
within OpenVMS.

The existing (and mostly-working) x86-64 port will already be a ~decade 
arriving with the V9.2-1 schedule, starting from when VSI decloaked.

Porting specific apps to Linux with or without wrappers can be and 
usually an incremental process.

A vendor kernel swap—or more likely a wholesale kernel fork—doesn't 
have the luxury of supporting a subset of the APIs.

And who knows where Linux and server platforms will be in a decade, 
given the increasingly integrated and increasingly heterogeneous system 
designs already available.

Trade-offs here shift, too.

Current-generation vendor-integrated SSD storage is now running ~at 
DDR3-1066 / PC3-8500 RAM (unregistered) speeds.

That's approximately the speed of main memory on Integrity rx2800, 
which runs DDR3-1066R registered...

Swapping for L4 / OKL4 / newer / around the time of the OpenVMS Arm 
port is another discussion.

But now? Kernel swaps? With V9.1-A available? Nope.


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