DSNB432I - SIMULATED BUFFER POOL ACTIVITY -

Explanation
This message is a section of output from the DISPLAY BUFFERPOOL command, which is part of message
DSNB401I.

DSNB432I: Simulated buffer pool activity

When you specify the DETAIL option, the output includes statistics on activity in the simulated buffer pool, including the numbers of page accesses that the buffer pool simulation determined could be avoided, for various types of read activity.

DSNB432I - SIMULATED BUFFER POOL ACTIVITY -
             AVOIDABLE READ PAGE MISSES - 
               SYNC    FROM DASD (R) = pages-sync-rand-dasd
               SYNC    FROM DASD (S) = pages-sync-seq-dasd
               ASYNC   FROM DASD     = pages-async-dasd
               SYNC    FROM GBP (R)  = pages-sync-rand-gbp 
               SYNC    FROM GBP (S)  = pages-sync-seq-gbp 
               ASYNC   FROM GBP      = pages-async-gbp 
             PAGES MOVED INTO SIMULATED BUFFER POOL = pages-to-sim-bp 
             TOTAL AVOIDABLE SYNC I/O DELAY = sync-io-delay MILLISECONDS

pages-sync-rand-dasd

The number of pages accessed randomly by avoidable synchronous read I/O from disk.

pages-sync-seq-dasd

The number of pages accessed sequentially by avoidable synchronous read I/O from disk.

pages-async-dasd

The number of pages prefetched by avoidable asynchronous read I/O from disk. 

pages-sync-rand-gbp

The number of pages accessed randomly by avoidable synchronous read from the group buffer pool..

pages-sync-seq-gbp

The number of pages accessed sequentially by avoidable synchronous read from the group buffer pool.

pages-async-gbp

The number of pages accessed by avoidable asynchronous read from the group buffer pool.

pages-to-sim-bp

The number of pages that were logically moved from the virtual buffer pool into the simulated buffer pool.

sync-io-delay

The total time in milliseconds that the buffer pool simulation determined would be spent waiting for synchronous read I/O from disk.