gtpo1m29 | Operations |
Use this command to display or change the current I/O queue threshold value for all 3990 record cache subsystem (RCS) control units.
Requirements and Restrictions
This command is valid for only 3990 RCSs.
Format
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This value is used to calculate the maximum overall I/O queue threshold value that the 3990 RCS can tolerate during degraded caching operations.
If you do not specify a value, the device threshold value that is currently retained in the RCS status table (SSST) is displayed.
Additional Information
ZBUFC HELP
ZBUFC ?
Examples
The current I/O queue threshold value for the 3990 RCS devices is displayed in the following example.
+--------------------------------------------------------------------------------+ |User: ZBUFC THRES | | | |System: BUFC0011I 08.06.02 RCS DEVICE I/O QUEUE THRESHOLD VALUE - 16384 | +--------------------------------------------------------------------------------+
The current I/O queue threshold value for the 3990 RCS devices is changed in the following example.
+--------------------------------------------------------------------------------+ |User: ZBUFC THRES 1234 | | | |System: BUFC0011I 08.06.41 RCS DEVICE I/O QUEUE THRESHOLD VALUE - 1234 | +--------------------------------------------------------------------------------+
Related Information
See the following for more information about record caching: