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.
Data was not returned for the coupling facility read request.