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Option 2.2. Review Runtime Statistics

OPC Server runtime statistics are as follows.


1	CLIENTS
2	EVENTS
3	GROUPS
4	ITEMS
5	PERIOD
6	READS
7	RUNNINGPROJECTS
8	TOTALPROJECTS
9	WRITES


1	CLIENTS


Point ID	\\STATISTICS\CLIENTS.VALUE
Description	Number of OPC clients currently connected to the CIMPLICITY OPC Server.


2	EVENTS


Point ID	\\STATISTICS\EVENTS.VALUE
Description	Number of value updates have been sent to attached OPC clients in the last PERIOD (second).


3	GROUPS


Point ID	\\STATISTICS\GROUPS.VALUE
Description	Number of OPC Group objects have been created by all attached clients. Note: Some OPC client applications initially create a large number of OPC groups and disable the subscription updates until needed. While this will not cause CPU loading problems, it could cause the initial connection and setup time with the CIMPLICITY OPC Server to be slow or for a large amount of memory to be used by the OPC Server.


4	ITEMS


Point ID	\\STATISTICS\ITEMS.VALUE
Description	Total number of items (points) the groups contain. Important ITEMS is not the number of items available from the OPC server. It is the number of items that OPC clients have requested the values for. The same item may appear in more than one group (or be referenced by more than one OPC client). Each reference is counted in this statistic.


5	PERIOD


Point ID	\\STATISTICS\PERIOD.VALUE
Description	How often the Toolkit updates the statistics 1000 = 1 second.


6	READS


Point ID	\\STATISTICS\READS.VALUE
Description	Number of read requests have been made by attached clients in the last sample PERIOD (second). A read transaction is composed of one or more items and may be a cache read or device read. Note: Cache reads are very efficient and do not typically cause significant CPU loading problems.)


7	RUNNINGPROJECTS


Point ID	\\STATISTICS\RUNNINGPROJECTS.VALUE
Description	Number of projects attached to the OPC Server that are running.


8	TOTALPROJECTS


Point ID	\\STATISTICS\TOTALPROJECTS.VALUE
Description	Total number of projects attached to the OPC Server, running and not running.


9	WRITES


Point ID	\\STATISTICS\WRITES.VALUE
Description	Number of write requests (set points) that have been made by attached clients in the last sample PERIOD (second).