The Pool activity section of the Pool interval report displays the performance information on the storage pools at various time intervals.
One line is printed for each active pool that existed during each selected interval. Changes to this section of the report include:
- The Size column values are now expressed in gigabytes.
- The CPU Util (Average CPU utilization by the transactions in the pool) column is expanded by 1 decimal position to show more precision.
- The following columns are expanded by 1 space, in order to show values
up to 9999.9:
- Synchronous DBR
- Synchronous DBW
- Synchronous NDBR
- Synchronous NDBW
- Asynchronous DBR
- Asynchronous DBW
- Asynchronous NDBR
- Asynchronous NDBW
- The A-W (Most active-to-wait transitions) column is expanded by 1 space in order to show values up to 6 digits.
Example
Pool Interval Report 08/30/05 12:18:33
Pool Activity Page 45
Member . . . : PTFVTR54 Model/Serial . : 825/10-D0BFD Main storage . . : 3072.0 MB Started . . . : 08/05/05 09:00:01
Library . . : PTFVTR54 System name . . : MEXGPL08 Version/Release . : 5/4.0 Stopped . . . : 08/05/05 11:00:00
Partition ID : 001 Feature Code . : 7418-2473-7418
-------- Physical I/O per Transaction --------- --------------- Job Maximums --------------
Itv Act Size CPU ----- Synchronous ----- ----- Asynchronous ---- CPU Phy
End PL Lvl (GB) Util Tns DBR DBW NDBR NDBW DBR DBW NDBR NDBW Util I/O Tns Rsp A-W W-I A-I
----- -- ----- -------- ------ -------- ----- ----- ----- ----- ----- ----- ----- ----- ----- ------- ----- ------ ------ ---- ----
09:00 2 112 2.388 1.90 0 11.5 140 0 .00 258 0 0
09:00 3 75 .292 .00 0 .0 0 0 .00 1 0 0
09:01 2 112 2.388 .29 0 .0 43 0 .00 233 0 0
09:01 3 75 .292 .00 0 .0 0 0 .00 2 0 0
09:01 2 112 2.388 1.39 0 .9 6575 0 .00 285 0 0
09:01 3 75 .292 .00 0 .0 0 0 .00 2 0 0
09:02 2 112 2.388 .39 0 .1 304 0 .00 234 0 0
09:02 3 75 .292 .00 0 .0 0 0 .00 2 0 0
09:02 2 112 2.388 .51 0 .1 275 0 .00 272 0 0
09:02 3 75 .292 .00 0 .0 0 0 .00 2 0 0
09:03 2 112 2.388 .38 0 .0 298 0 .00 235 0 0
09:03 3 75 .292 .00 0 .0 0 0 .00 2 0 0
09:03 2 112 2.388 .53 0 .1 298 0 .00 266 0 0
09:03 3 75 .292 .00 0 .0 0 0 .00 2 0 0
09:04 2 112 2.388 .37 0 .0 291 0 .00 235 0 0
09:04 3 75 .292 .00 0 .0 0 0 .00 2 0 0
09:04 2 112 2.388 .52 0 .1 257 0 .00 258 0 0
Itv End -- Interval end time (hour and minute)
PL -- Pool identifier
Act Lvl -- Activity level of the pool
Size (GB) -- Size of the pool (Gigabytes)
CPU Util -- Average CPU utilization by the transactions in the pool. This is the average of all processors
Tns -- Number of transactions in the pool
Physical I/O per Trans -- Average physical disk I/O operations per transaction in the pool
Synchronous DBR -- Average synchronous data base reads per transaction
Synchronous DBW -- Average synchronous data base writes per transaction
Synchronous NDBR -- Average synchronous non-data base reads per transaction
Synchronous NDBW -- Average synchronous non-data base writes per transaction
Asynchronous DBR -- Average asynchronous data base reads per transaction
Asynchronous DBW -- Average asynchronous data base writes per transaction
Asynchronous NDBR -- Average asynchronous non-data base reads per transaction
Asynchronous NDBW -- Average asynchronous non-data base writes per transaction
Job Maximums -- Maximum values by a job in the pool
CPU Util -- Highest percentage CPU utilization
Phy I/O -- Most physical disk I/O requests
Tns -- Most transactions
Rsp -- Highest average response time (seconds)
A-W -- Most active-to-wait transitions
W-I -- Most wait-to-ineligible transitions
A-I -- Most active-to-ineligible transitions