Re: Workers and Cycles


<triadtrio@xxxxxxxxx> wrote in message
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On Apr 14, 9:51 am, "Alan Ponting" <alan.pont...@xxxxxxxxxxxx> wrote:
"Alan Ponting" <alan.pont...@xxxxxxxxxxxx> wrote in message

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"David Milligan" <David.Millig...@xxxxxxxxxxxxxxxxx> wrote in message
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H Vlems wrote:
On 12 apr, 20:19, triadt...@xxxxxxxxx wrote:
What do workers and Cycles achive in WFL and what are they meant for?
Can anyone site examples.
thanks
Tracey

A cycle is the time needed by the processor to execute one (basic
assembler) instruction.
Branching instructions and simple arithmetic ones (ADD, INCrement
etc.) usually fall in that category. Typically multiplication and
division are more complex to implement and these take more cycles. Of
course this definitions comes from a time where one processor could
handle one program only and in one execution stream as well.
What strikes me is that you use WFL in the question. Now WFL is not
what I'd call a compiled language, like say, Algol or Cobol. These
languages are fed into a compiler which translates the source text
into executable code (on an MCP system that is). In those cases there
is a correspondence between the original language construct and the
assembler generated. I:=J+K; and ADD J to K GIVING I. will translate
into a similar instruction set. On a VAX it would be one ADDL
instruction, on a Burroughs a few instructions. WFL has no compiler so
there is absolutely no link between a WFL instruction and the executed
binary code.
I think this must be a question about a specific WFL job (workers and
cycles suggest some kind of database load or dump?) Without knowing the
contents of the job, the question is meaningless.

And WFL *is* a compiler, and there is definitely a link between a WFL
instruction and the executed binary code. The code is stored in the
temporary job code file.

If you are referring to a WFL that does database backups on a MCP
(Aseries) type machine, then have you looked at the manual "Enterprise
Database Server for ClearPath MCP" ? Refer to the section on database
dumps, and parameters to SYSTEM/DMUTILITY for the gory details or number
of workers, tapes, cycles, versions, etc etc..

Hope it helps,
Alan Ponting

Ooops, typo, that was only half the manual title I gave. It should be
Enterprise Database Server for ClearPath MCP - Utilities Operations Guide
Form 8600 0759-613 or what ever version suits you.

Alan Ponting- Hide quoted text -

- Show quoted text -
Alan
You are right it is being used as a DMUTILITY dump statement.I looked
through the manual but all it says is that this is an option used when
working with Tapes.
I do not have any access to Tapes and their environments so I am still
stuck here.
Somebody can you pls.. clarify
Tracey

FYI - you can dump a database to a disk file, example

RUN *SYSTEM/DMUTILITY("DB=MYDB OFFLINE DUMP = TO MYFILE ON MYPACK")

Alan


.

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