15.10 - Process Scheduling: Process Pending Wait Time Columns - Teradata Database

Teradata Database Resource Usage Macros and Tables

Product
Teradata Database
Release Number
15.10
Published
April 2016
Language
English (United States)
Last Update
2018-05-17
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These columns identify the how long the processes were blocked for each possible reason listed below.

The following column definition descriptions can also be found in Process Scheduling: Process Pending Wait Time Columnsof ResUsageSpma table.

Column Name Mode Description Data Type
ProcWaitCPULimit count Total time in milliseconds processes were blocked pending delays due to the Priority Scheduler CPU Limits (for example, System Limit, AG Limit, or RP).

For information about the Priority Scheduler CPU Limit, see Utilities.

FLOAT
ProcWaitFlowControl count Total time in milliseconds processes were blocked pending the delays caused by flow control conditions. FLOAT
ProcWaitFsgLock count Total time in milliseconds processes were blocked pending an FSG lock. FLOAT
ProcWaitDBLock count Total time in milliseconds processes were blocked pending a database lock. FLOAT
ProcWaitSegLock count Total time in milliseconds processes were blocked pending a disk or task context (for example, scratch, stack, and so on) lock. FLOAT
ProcWaitFsgRead count Total time in milliseconds processes were blocked pending an FSG read from disk. FLOAT
ProcWaitFsgWrite count Total time in milliseconds processes were blocked pending an FSG write from disk. FLOAT
ProcWaitFsgNIOs count Total time in milliseconds processes were blocked waiting for task I/Os to complete. FLOAT
ProcWaitMisc count Total time in milliseconds processes were blocked pending miscellaneous events. FLOAT
ProcWaitMonitor count Total time in milliseconds processes were blocked pending a user monitor. FLOAT
ProcWaitMonResume count Total time in milliseconds processes were blocked pending a user monitor resume from a yield. FLOAT
ProcWaitNetThrottle count Total time in milliseconds processes were blocked pending delivery of outstanding outgoing messages. FLOAT
ProcWaitSegMDL count Total time in milliseconds processes were blocked waiting for an MDL resource to become available. An MDL is an internal PDE data structure needed by the operation of the segment subsystem. FLOAT
ProcWaitSegNoVirtual count Total time in milliseconds processes were blocked waiting for virtual memory for a segment. FLOAT
ProcWaitTime count Total time in milliseconds processes were blocked pending some amount of elapsed time only. FLOAT
ProcWaitQnl count Total time in milliseconds processes were blocked pending an TSKQNL lock. FLOAT