Listed below is a question we emailed to many of our customers and readers 
last week.  We also thought it might be a good discussion item for this forum.  
You may send comments to us using the address shown below, or it may be better 
to just reply to the list.

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For many years the MVS operating systems (OS/390 and now z/OS) have 
maintained separate reporting structures for processor time consumed in task 
mode (TCB 
time) versus processor time consumed while running under an authorized subtask 
(SRB time).  Although these measurements are maintained separately in the 
control blocks and SMF records, we (along with others in the industry) have 
always recommended that these two measurements be combined and charged at the 
same 
rate for billing purposes.
 
But there are others who do not agree, and we will still occasionally talk to 
a user who does not charge for SRB CPU time, or who charges a different rate 
for it than regular TCB CPU time.  We would like to see if this is an issue 
for many users.  If you have some type of chargeback system where users are 
billed for CPU usage then please answer the following two questions:
 
1) Do you ignore SRB CPU time and not charge for it as part of your 
accounting algorithm?
2) Do you charge for SRB CPU time, but use a different rate than for TCB CPU 
time?
 
If you answered "yes" to either of these two questions, could you please send 
us an email at [EMAIL PROTECTED] and include your reasons for doing 
this?  Thanks in advance for your help.

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Clark Kidd
Watson & Walker, Inc.

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