I/O activity summary report
The I/O activity summary report provides an overview of system-wide I/O activity.
The I/O activity summary report:
- Summarizes the information contained in the I/O activity detail reports for a location (refer to I/O activity detail report).
- Shows on a single page a block of entries for each of the I/O categories: buffer pool, EDM pool, active log, archive log/BSDS, and cross invalidation (XI).
- Is produced if you specify the IOACTIVITY(REPORT) command and there is at least one I/O activity IFCID begin/end pair in the input data set satisfying the FROM and TO, and INCLUDE or EXCLUDE criteria. You do not have to specify the SUMMARY level because this is the default.
The following command produces the I/O activity summary report shown below:
IOACTIVITY
REPORT
LOCATION: RS22ODS5 IBM Z OMEGAMON AI FOR DB2 (V6R1M0) PAGE: 1-1 GROUP: ODS5 I/O ACTIVITY REPORT - SUMMARY REQUESTED FROM: NOT SPECIFIED MEMBER: OCA5 TO: NOT SPECIFIED SUBSYSTEM: OCA5 INTERVAL FROM: 02/28/19 11:20:21.31 DB2 VERSION: V12 TO: 02/28/19 11:21:58.70 0 CT/PT/DBD NOT IN AVG LEN BUFFER POOL TOTALS AET EDM POOL REFERENCES EDM POOL AET (BYTES) ---------------------------- -------- --------- --------------------------- ---------- -------- --------- --------- 0TOTAL I/O REQUESTS 145806 0.000414 CURSOR TABLE - HEADER 0 0 N/C 0.00 CURSOR TABLE - DIRECTORY 0 0 N/C 0.00 TOTAL READ I/O REQUESTS 145806 0.000414 CURSOR TABLE - RDS SECTION 0 0 N/C 0.00 NON-PREFETCH READS 604 -- TOTAL PLANS ----- 0 0 N/C 0.00 ZHYPERLINK 298 DISK CACHE HIT 303 PREFETCH READS WITHOUT I/O 1 PACKAGE TABLE - HEADER 0 0 N/C 0.00 WITH I/O 145201 PACKAGE TABLE - DIRECTORY 0 0 N/C 0.00 PAGES READ 4644007 PACKAGE TABLE - RDS SECTION 0 0 N/C 0.00 PAGES READ / SUCC READ 31.98 -- TOTAL PACKAGES -- 0 0 N/C 0.00 0TOTAL WRITE REQUESTS 0 N/C DATABASE DESCRIPTORS 0 0 N/C 0.00 SYNCHRONOUS WRITES 0 N/C COUPLING FACILITY CASTOUTS 0 N/C PAGES WRITTEN PER WRITE 0.00 ASYNCHRONOUS WRITES 0 N/C COUPLING FACILITY CASTOUTS 0 N/C PAGES WRITTEN PER WRITE 0.00 -ACTIVE LOG TOTALS AET ARCHIVE LOG TOTALS AET BOOTSTRAP DATASET TOTALS AET --------------------- -------- --------- ---------------------- -------- --------- -------------------- -------- --------- 0TOTAL WAITS 48 0.000294 TOTAL WAITS 0 N/C 0READ REQUESTS 0 N/C READ REQUESTS 0 N/C READ REQUESTS 0 N/C DASD READ 0 N/C TAPE READ 0 N/C 0WRITE REQUESTS 48 0.000294 OFFLOAD REQUESTS 0 N/C WRITE REQUESTS 0 N/C CONT. CI / WRITE 1.00 BLOCKS / OFFLOAD 0.00 0OTHER WAITS 0 N/C OTHER WAITS 0 N/C CROSS-INVALIDATION ACTIVITY TOTALS ALLOCATE 0 N/C ALLOCATE 0 N/C ----------------------------- -------- DEALLOCATE 0 N/C DEALLOCATE 0 N/C OPEN 0 N/C OPEN 0 N/C SYNCHRONOUS READS 0 CLOSE 0 N/C CLOSE 0 N/C REFRESHED FROM GROUP BPOOL 0 HSM RECALL 0 N/C REFRESHED FROM DASD 0 CATALOG LOCATE 0 N/C MULTI-DATA SET TAPE 0 N/C SEQUENTIAL PREFETCHES 0 TAPE VOL POSITIONING 0 N/C REFRESHED FROM GROUP BPOOL 0 WTOR ISSUED 0 N/C REFRESHED FROM DASD 0 DATA SET UNAVAILABLE 0 N/C PHYSICAL UNIT UNAV. 0 N/C RDR SERV.UNAVAILABLE 0 N/C