DSNB784I GROUP DETAIL STATISTICS READS DATA RETURNED = r1
Explanation
This message is a section of output from the DISPLAY GROUPBUFFERPOOL command, which is part of message DSNB750I.
DSNB784I and DSNB785I: Group read statistics
If the DISPLAY GROUPBUFFERPOOL command included the GDETAIL option, the output includes read statistics for the group buffer pool.
DSNB784I - GROUP DETAIL STATISTICS
READS
DATA RETURNED = r1
DSNB785I - DATA NOT RETURNED
DIRECTORY ENTRY EXISTED = r2
DIRECTORY ENTRY CREATED = r3
DIRECTORY ENTRY NOT CREATED = r4, r5
- r1
- The "read hit" counter. The number of times that a page was returned for a coupling facility read request.
- r2
- The "read miss directory hit" counter. The number of times that a coupling facility read request specified a page for which a directory entry exists, but no data was cached for that page. Data was not returned for the coupling facility read request.
- r3
- The "read miss name assigned" counter. The number of times that a coupling facility read request specified a page for which a directory entry was created. Data was not returned for the coupling facility read request.
- r4
- The "read miss assignment suppressed" counter. The number of times that a coupling facility read request specified a page for which no directory entry exists and no directory entry was created. Data was not returned for the coupling facility read request.
- r5
- The "read miss cache full" counter. The number of times that both of the
following events occurred:
- A coupling facility read request specified a page for which no directory entry exists.
- A directory entry was not created because the group buffer pool did not have enough storage.