DSNB455I SYNCHRONOUS I/O DELAYS — AVERAGE DELAY = avd MAXIMUM DELAY = mxd TOTAL PAGES = tpg SYNCHRONOUS I/O DELAYS WITH ZHYPERLINK — AVERAGE DELAY = avdz MAXIMUM DELAY = mxdz TOTAL PAGES = tpgz

Explanation

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

DSNB455I: Synchronous I/O delay statistics

The output includes synchronous I/O delay statistics if all of the following conditions are true:

  • You specified the LSTATS option on the DISPLAY BUFFERPOOL command.
  • The buffer pool is an active buffer pool.
  • The values of the synchronous I/O delay statistics are not zero.

These synchronous I/O delay statistics are reported for a data set for an open table space or index space that is associated with the buffer pool. The values that are listed are the statistics that were gathered since the last display for the data set.

Note: There are two sections to report synchronous I/O delays. The SYNCHRONOUS I/O DELAYS section shows statistics for all I/Os. The SYNCHRONOUS I/O DELAYS WITH ZHYPERLINK section show statistics only for those requests which used zHyperlink.

The relevant table space or index space is identified in either line DSNB464I or line DSNB465I. The relative data set within the table space or index space is identified in line DSNB466I.

DSNB455I - SYNCHRONOUS I/O DELAYS -
             AVERAGE DELAY         = avd
             MAXIMUM DELAY         = mxd
             TOTAL PAGES           = tpg
avd
The average I/O delay in microseconds for pages in the data set.
mxd
The maximum I/O delay in microseconds for pages in the data set.
tpg
The total number of pages that are read or written for the data set.
SYNCHRONOUS I/O DELAYS WITH ZHYPERLINK -
             AVERAGE DELAY         = avdz
             MAXIMUM DELAY         = mxdz
             TOTAL PAGES           = tpgz
avdz
The average I/O delay in microseconds for pages in the data set when zHyperLink is used.
mxdz
The maximum I/O delay in microseconds for pages in the data set when zHyperLink is used.
tpgz
The total number of pages that are read or written for the data set when zHyperLink is used.

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