Measure Reference Manual

SWAPS
Number of swap operations (both into and out of memory) performed by the memory manager.
The memory manager swaps one or two pages at a time. The CPU SWAPS counter is advanced
once for each swap regardless of the number of pages swapped. (The CPU SWAPS counter differs
from the DISC SWAPS counter.)
Only pages that are updated are swapped. Code pages are swapped into memory, but because
they cannot be updated, they are never swapped out. Data pages are swapped both into and out
of memory. However, a data page that has no initial data is not swapped in until it is used.
Depending on memory requirements and the types of pages being swapped in and out, a page
fault (as counted by the PROCESS entity) can cause no swaps, one swap, or two swaps:
SwapsSituation
0Code removed or free page available in memory; no initial data page swapped in
1Code removed or free page available; code or data page with initial data swapped in
2Used data page swapped out and used data page swapped in
Counter type: Incrementing.
TNS-BUSY-TIME
Time that the CPU was busy executing TNS code. This counter applies only to measurements taken
on a TNS/R or TNS/E system.
See Usage Notes for H-Series and J-Series CPU Entities (page 177).
Counter type: Busy.
TRANSACTIONS
Number of transactions performed by terminal processes on the measured CPU that are in currently
active measurements. A transaction is a read from a terminal followed by a write to the terminal.
Response time is the interval between the end of the read and the beginning of the write.
PageFunctionRelated Counter
170Measures the response timeRESPONSE-TIME
360Measures response time and transactions for a particular
terminal
TERMINAL RESPONSE-TIME and
TRANSACTIONS
Counter type: Incrementing.
UNSP-PAGES-END
Number of pages on the UNSP-PAGES-QTIME queue at the end of the measurement interval.
Counter type: Snapshot.
UNSP-PAGES-QTIME
Time that unsponsored pages (shared pages not owned by any process) spent in main memory.
For a description of unsponsored pages, see Usage Notes for G-Series CPU Entities (page 177).
Counter type: Queue.
UNSP-PAGES-START
Number of pages on the UNSP-PAGES-QTIME queue at the start of the measurement interval.
Counter type: Snapshot.
172 Entities and Counters