Pathway/iTS System Management Manual (G06.24+)

Tuning Your System Using Statistics
HP NonStop Pathway/iTS System Management Manual—426748-002
5-14
QUEUE INFO
This costs extra disk space for the swap file, but prevents the TCP from performing
unnecessary code fetching.
(The SCREEN COBOL code area is not shared between multiple TCPs within a
CPU. Consequently, large code areas might create the potential for increasing the
memory pressure within the operating system. However, it is more efficient for the
system to perform code fetching than the TCP.)
To adjust the size of the code area, run the TCP with STATS ON and use the STATS
TCP display information to determine the appropriate size.
REQ CNT
For the code area, REQ CNT indicates the number of requests for defined code
segments. A terminal task can request at most three defined code segments:
executable pseudocode, base screen definitions, and overlay definitions. Each defined
segment fetched is counted separately.
(The number of defined segments not present in the code area is used in the
calculation of the % ABSENT entry.)
This information is primarily useful to HP internal development.
MAX REQ
For the code area, MAX REQ indicates the largest number of bytes requested for
SCREEN COBOL code space. This request includes the total number of bytes for, at
most, three code segments: executable pseudocode, base screen definitions, and
overlay definitions.
QUEUE INFO
The QUEUE INFO section in the statistics display provides information about the
queues associated with this storage pools and tasks:
•
TERMPOOL
•
SERVERPOOL
•
Memory management (MEMMAN)
•
Link management (LINK and DELINK)
•
Checkpointing (CHECKPOINT)
Example 5-4 on page 5-15 shows only the QUEUE INFO section of the sample TCP
statistics.