ClearPath OS 2200 Series Release 13.2 Software Planning and ...

Software Controlled Performance (SCP)
The following two new TIP FLAGBOX bits are defined that can be used to alter the
default maximum wall clock time action described earlier:
• MAXTIMENQ (bit 19) – If set, and a transaction copy exceeds its specified maximum
wall clock time, an “E” keyin is immediately performed to abort the transaction. No
read-and-reply (query) console message is generated.
• MAXTIMEDP (bit 18) – If set, an EXEC dynamic online dump is generated prior to the
aborting of a transaction copy that has exceeded its specified maximum wall clock
time. The resulting EXEC online dump can provide additional diagnostic information
(from a system view) to help determine the reason that the transaction copy
exceeded its specified maximum wall clock time.
For more information regarding the setting and operation of the VALTAB TIME
parameter see PLEs 18646846 and 18675773.
4.7.6. ClearPath OS 2200 Release 12.0
A new TIP VALTAB indicator option is defined to specify that a transaction is Java
enabled. When this “V” indicator is defined (IND,V) it enables Java transactions to be
loaded as RTPS and be successfully deactivated on an INITIAL call.
The following restrictions apply:
• Only the first or main Java user activity can be active at the time an INITAL call is
made.
• Only the first or main Java user activity can start a step.
This option is not supported for non-Java TIP transactions. JVM Level 4R2 or higher
must be installed to use this option. For more information on Java enabled TIP
transactions, refer to EXEC PLE 18561590.
4.8. Software Controlled Performance (SCP)
The OS 2200 Software Controlled Performance (SCP) feature controls system
performance for all supported systems for this release (see Section 1). All Instruction
Processors in a reduced speed model are subjected to a forced idle loop delay that is
spread evenly across all IPs. It might vary slightly for each IP, but it is accurate on a
system-wide basis. All IPs populating the partition run at the same performance level.
Note: For more information on SCP, refer to the Exec Administration Reference
Manual.
An Image Enabler is an SCP Exec key tape or file used for activating a performance
image on a ClearPath server.
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