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VM/370 Hercules Optimisation


 

Gregg,
Sorry Gregg this is not something I have ever done, somewhere along the way, someone else added it, and it became part of the n-packs.
That is the idea of the 9-packs, to allow you to use VM.
I don't think any system mods are involved so you could just dump the minidisk
Dave

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Gregg Levine
Sent: 02 February 2020 00:48
To: [email protected]
Subject: Re: [h390-vm] VM/370 Hercules Optimisation

Hello!
I said I knew it was out there, I did not miss one. If nothing I might have
definitely did so, it is because I did not download it before.now. I just did.
Can you describe completely the steps to do all of that?

And please use simple language. I believe there are people following our list
who're just starting out on this, and do indeed need to know stuff like this.

And all of this will become clear to the one also named Dave, who is allowing
a group of workers from Asia to run his shop/museum.
-----
Gregg C Levine gregg.drwho8@...
"This signature fought the Time Wars, time and again."

On Sat, Feb 1, 2020 at 7:30 PM Dave Wade <dave.g4ugm@...> wrote:

Gregg,
You missed one!



and there is an additional optional tape



You need to BUNZIP it ad then you can load the first file which is
ABSTRACT ABSTRACT

I think you will find file 39 is stuff you need.
You need to create a user CPWATCH and load the file to its disk...

Dave

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Gregg
Levine
Sent: 02 February 2020 00:22
To: [email protected]
Subject: Re: [h390-vm] VM/370 Hercules Optimisation

Hello!
So its been added to the basic system regarding the 6 Pack series? I
know there's a Waterloo tape some place for the basic system and of
course the dreaded additional pack tape that we know how to install
but I confess I do not know how.

pi@raspberrypi:~ $ ls /media/memory0/h390/*.aws.*
/media/memory0/h390/base-source.aws.bz2
/media/memory0/h390/CPR6L0.ddr.aws.bz2
/media/memory0/h390/ptf-616.aws.bz2
/media/memory0/h390/starter-3330.aws.bz2
/media/memory0/h390/VMREL6.ddr.aws.bz2

For example up there is the base-source.aws.bz2 one, and then the CP
tape also packaged as an AWS one and compressed using Bzip2 and that
PTF tape, and the crazy one is marked starter-3330.aws.bz2. That's
the one that's got me a trifle peeved.

I understand making use of the two named as the system ones, as they
were restored a while back, I have kept complete decks or rather drive
images.

So are the Waterloo things on those two ones, I've not restored? And
how would I go about bringing the starter one into the Bob set I use.
Of course I could go ahead and bring up next time the current but
not Beta six pack.
-----
Gregg C Levine gregg.drwho8@... "This signature fought the
Time Wars, time and again."

On Fri, Jan 31, 2020 at 4:10 AM Dave Wade <dave.g4ugm@...>
wrote:

Gregg
Its an add-on so it is only in the "n--packs" The source is on the
Waterloo
tape. It may need tweaking as it was originally written on sepp/bsepp.
Dave

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Gregg
Levine
Sent: 31 January 2020 01:37
To: [email protected]
Subject: Re: [h390-vm] VM/370 Hercules Optimisation

Hello!
It does? Then why did I get this from a DIAL CPWATCH command
string on the original one, DIAL CPWATCH DMKDIA045E CPWATCH
NOT
LOGGED ON
IND from the console not the 3270 shows what it is doing,
CPWATCH from the same place does not.

Does this mean it's a missing entry on the original Bob kit?
This will perfectly be obvious to everyone except the individual
reading this out loud to a crowd of Yeti. (Including one who
smokes a brand of smoking tobacco that's older than most of us.)
-----
Gregg C Levine gregg.drwho8@... "This signature fought the
Time Wars, time and again."

On Wed, Jan 29, 2020 at 9:00 AM Dave Wade
<dave.g4ugm@...>
wrote:

Folks



CPWATCH reports paging rate.



Dave





From: [email protected] <[email protected]> On Behalf Of Bob
Polmanter
Sent: 29 January 2020 12:44
To: [email protected]
Subject: Re: [h390-vm] VM/370 Hercules Optimisation



Adrian,

In my experience, I doubt you are doing all that much paging.
First off, the
VM/370 CP IND command doesn't show paging stats like it did in
later releases, so it is difficult to know how much you are paging.

If you are a single user VM/370 system, running 16MB real,
even if you had
a 16MB user virtual machine, you would have to go some to cause
much paging beyond a very light amount. If you had several 16MB
user machines running simultaneously with large active working
sets, then maybe you could get the paging rate up to 5-10 pages per
second.
With Hercules caching, it just isn't a problem.

Regards,
Bob








 

On Sat, 1 Feb 2020 at 20:22, Drew Derbyshire <swhobbit@...> wrote:

Full screen CMS was/is a awful hack -- all the native CM/SP line
oriented output is intercepted using IUCV and redirected to the full
screen environment. And yes, because the output is written,
intercepted, and written again, it is a resource pig.

Full screen CMS also used command names that polluted the existing
namespace. For example in VM/SP 4 you simple could enter "HELP DEFINE"
to get the information on the CP command to define virtual devices, but
in VM/SP "HELP DEFINE" would return information on DEFINE WINDOW and
DEFINE VSCREEN. ("HELP CP DEFINE" was required for the old behavior.)

The first VM/SP version with full screen CMS is VM/SP 5. The LCM+L 4361
runs VM/SP 5, and yes, you can issue "SET FULLSCREEN ON" on it (may
Ceiling Cat have mercy on your virtual CPU).


Tony H.


 

Drew,

A model 158 had an AP and an MP option.? With AP, you could get at least 6 MB of real main storage on there...? (ask me how I know this ...) ;-)?? (With a 158-MP, I think 8MB was the max.)

Also, VM/370 could be configured for an AP environment.? Unlike MVS, with a hierarchy of "locks" I think VM had just a single "global" lock that CP would acquire, as needed, when updating any of the CP control blocks, so that both CPUs did not try to update the same control blocks at the same time.

MVS 3.8J also fully supported both the AP and MP configurations of the 158 and 168, back in those days.

Folks who want to use more "cores" on modern processors running under Hercules-390 can emulate a 158-AP/MP, 168-AP/MP, or 3031/3033 AP/MP configuration, in the SYSGEN of VM/370 Rel.6 or MVS 3.8J.

Cheers,

Mark S. Waterbury