[Info-vax] The best VMS features, was: Re: openvms renaming file

Robert A. Brooks FIRST.LAST at vmssoftware.com
Mon May 28 11:46:42 EDT 2018


On 5/28/2018 11:01 AM, Dave Froble wrote:

> The problem with RMS isn't the design, it's the implementation.  Modern RDBMS
>  systems do much of their work in memory.  RMS does the work on disk.  Quite
> a large difference in speed, as one might expect.
> 
> Re-implement RMS in the same manner and you'd see totally different 
> performance.  Ya got to remember how old the design and implementation of RMS
>  is.  40 years ago it worked well.

You want stuff done in memory with RMS?  Use global or local buffers, either
by $ SET FILE, FDL, etc . . .

Made a huge difference 30+ years ago; still can make a big difference today.

I'm not claiming this is as good as a modern in-memory database, but depending
upon the application, you can get an order of magnitude or two of improvement.

-- 
                  -- Rob



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