02/25/85  spg_util_


The spg_util_ subroutine collects metering information from the Multics
supervisor and subtracts it from the previous sample taken.  It is
normally called by the system_performance_graph command.  To use this
subroutine, access to either the phcs_ or the metering_gate_ gate is
required.


Entry points in spg_util_:
   (List is generated by the help command)


:Entry:   spg_util_:  02/25/85  spg_util_


Function:
collects metering information from the Multics supervisor and 
subtracts it from the previous sample taken.


Syntax:
declare spg_util_$spg_util_ (float, float, float, float, float, float,
     float, float, float, char(110), fixed bin, fixed bin)
call spg_util_$spg_util_ (pzi, pnmpi, pmpi, pint, ptc, ppf, psf,
     puse_rz, px, string, length, chsw)


Arguments:
pzi
   is the percentage of zero idle time.  (Output)
pnmpi
   is the percentage of nonmultiprogramming idle time.  (Output)
pmpi
   is the percentage of multiprogramming idle time.  (Output)
pint
   is the percentage of time in interrupts.  (Output)
ptc
   is the percentage of time in the traffic controller.  (Output)
ppf
   is the percentage of time in page control.  (Output)
psf
   is the percentage of time in segment control.  (Output)


puse_rz
   is the percentage of time executing nonsupervisor code spent in ring
   zero.  (Output)
px
   is no longer used.  A value of 0.0 is returned.  (Output)
string
   if the variable chsw is nonzero, string contains upon output a
   character string that describes a new configuration or a new setting
   of the scheduler tuning parameters.  (Output)
length
   is the length of the character string "string".  (Output)
chsw
   is a switch that, if zero, indicates normal output; if nonzero, it
   indicates that string and length are valid and should be output.
   (Output)


:Entry:  reset:  02/25/85 spg_util_$reset


Function:  The effect of this call is to reset the internal
initialization switch of the subroutine.


Syntax:
declare spg_util_$reset entry;
call spg_util_$reset;


Arguments:
   There are no arguments.


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Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group BULL including BULL HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell BULL Inc., Groupe BULL
and BULL HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture 
for managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

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Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, BULL or BULL HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by BULL HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved