[Info-vax] VSI OpenVMS Alpha 8.4-2L2

[Jan-Erik Soderholm]

Den 2017-07-13 kl. 00:43, skrev Jan-Erik Soderholm:

> First "look and feel" from 8.4-2L2 Alpha.
> 

Now, all three systems run 8.4-2L2. The two last (dev and prod)
was still at 8.2 and to get supported upgrade path I went:
- HP 8.2 => HP 8.4
- Add 8.4 UPDATE 10
- HP 8.4 => VSI 8.4-2L2

A very simple DCL script shows slightly better performance.
A DCL loop with 10.000 f$user() calls runs approx 30% (!) faster.
Two other DCL loops with f$extract and f$trnlnm are 5% faster.
One test with f$getdvi is 5% slower. A test with open/write/delete
on a file is more or less unchanged, probaby expcted since it is
mainly I/O bound.

How much of this that comes from 8.2 vs. 8.4 or from the
specific 8.4-2L2 changes, I don't know. But I seem to remember
that I got quite equal results from 8.2 and 8.4 anyway...


Currently the number of pages "permanently allocated to OpenVMS"
is lower, but I'll check in a few weeks when the site is back to
full operation again. I have not changed any system parameters
myself, apart from what the "first boot" does (if any). (Does the
number of pages "permanently allocated to OpenVMS" change during
runtime or is this a fixed number after boot?)


Anyway, so far so good. I also had the opportunity to "test drive"
the VSI support (a detail in the upgrade requirements) and it
worked perfectly. :-)


FWIW...

Jan-Erik.