HMI Logging Table Counters

Listing of performance data for Database Logger Tables.

Accumulated totals since the project started

For	Counter	Counts the Number of:
A	Writes	Rows inserted into one or all logging tables. Accumulated Writes indicate that there is activity in the system.
A	Reads	Rows read from one or all logging tables. Reads will accumulate only if an application in the project performs reads, for example SPC. If not Reads will display as 0.
A	Maintenance Events	Maintenance events submitted for one or all logging tables.
A	Maintenance Actions	Maintenance actions successfully completed for one or all logging tables. Each Export, Purge or other action configured for the table is counted separately.

Indicators of current performance

For	Counter	Displays the
N	Writes/sec	Rows inserted into the specified table per second indicate how quickly a process is trying to send messages through the system.
N	Reads/sec	Rows read from the specified table per second, are only read if an application in the project performs reads, for example SPC. If not, Reads/sec will display as 0.
N	Queue Size	Database operations (including Reads, Writes and Maintenance Events) which have been submitted but not yet processed. If there is no application in the project that processes writes, the queue size will be 0.

Expertise Code

N	Novice
A	Advanced
E	Expert