Distribution and consistency services (DCS) stack counters

Distribution and consistency services (DCS) stack counters

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Use the Distribution and Consistency Services (DCS) counters that the PMI and TPV collect to monitor communication between core groups.

Name Key Description Granularity Type Level Overhead ID
CoalesceTime DCSStats.coalesceTime Amount of time that it actually takes to coalesce a view Per DCS stack TimeStatistic All Medium 1
HighSeverityCongestionEventCount DCSStats.transmitterCongestedCounter Number of times that a high severity congestion event for outgoing messages was raised. Per DCS stack CountStatistic All Medium 2
IncomingMessageSize DCSStats.incomingMessageSize Minimal, maximal and average size (in bytes) of the messages that were received by the DCS stack Per DCS stack AverageStatistic All High 3
JoinViewChangeTime DCSStats.mergeTime Amount of time that it took to do a merge view change. The DCS stack is blocked during this time. Per DCS stack TimeStatistic All High 4
LocalMemberMessageRetransmissionCount DCSStats.numOfVSCompletionMessages Number of messages that were retransmitted during the view change to ensure synchronization with other members. Per DCS stack AverageStatistic All High 5
MessageBufferReallocationCount DCSStats.numOfReallocs Number of message buffer reallocations due to inadequate buffer size. If this number is larger than 20 percent of the number of sent messages, you may want to contact IBM Support Per DCS stack CountStatistic All Medium 6
OutgoingMessageSize DCSStats.outgoingMessageSize Minimal, maximal, and average size (in bytes) of the messages that were sent through the DCS stack Per DCS stack AverageStatistic All High 7
ReceivedMessageCount DCSStats.incomingMessageCounter Number of messages received by the DCS stack Per DCS stack CountStatistic All High 8
RemoveViewChangeTime DCSStats.splitTime Amount of time that is consumed when splitting a group. The DCS stack is blocked during this time. Per DCS stack TimeStatistic All High 9
SentMessageCount DCSStats.outgoingMessageCounter Number of messages that were sent through the DCS stack Per DCS stack CountStatistic All High 10
SuspicionCount DCSStats.suspectCounter Number of times that the local member is suspected by other members Per DCS stack CountStatistic All High 11
SynchronizationCompleteTime DCSStats.vsCompleteCurrentTime Amount of time that is needed to guarantee that all view members are synchronized. Per DCS stack TimeStatistic All High 12
SynchronizationTimeoutCount DCSStats.vsTimetoutExpiredCounter Number of times that the synchronization procedure timed out. Per DCS stack CountStatistic All Medium 13
ViewChangeCount DCSStats.viewCounter Number of times that this member underwent view changes. Per DCS stack CountStatistic All Medium 14
ViewChangeTimeoutCount DCSStats.mbrAlarmTimeoutCounter Number of times that the view change procedure timed out. Per DCS stack CountStatistic All Medium 15
ViewGroupSize DCSStats.groupSize Size of the group to which the local member belongs. Per DCS stack AverageStatistic All1 Medium 16

Name	Key	Description	Granularity	Type	Level	Overhead	ID
CoalesceTime	DCSStats.coalesceTime	Amount of time that it actually takes to coalesce a view	Per DCS stack	TimeStatistic	All	Medium	1
HighSeverityCongestionEventCount	DCSStats.transmitterCongestedCounter	Number of times that a high severity congestion event for outgoing messages was raised.	Per DCS stack	CountStatistic	All	Medium	2
IncomingMessageSize	DCSStats.incomingMessageSize	Minimal, maximal and average size (in bytes) of the messages that were received by the DCS stack	Per DCS stack	AverageStatistic	All	High	3
JoinViewChangeTime	DCSStats.mergeTime	Amount of time that it took to do a merge view change. The DCS stack is blocked during this time.	Per DCS stack	TimeStatistic	All	High	4
LocalMemberMessageRetransmissionCount	DCSStats.numOfVSCompletionMessages	Number of messages that were retransmitted during the view change to ensure synchronization with other members.	Per DCS stack	AverageStatistic	All	High	5
MessageBufferReallocationCount	DCSStats.numOfReallocs	Number of message buffer reallocations due to inadequate buffer size. If this number is larger than 20 percent of the number of sent messages, you may want to contact IBM Support	Per DCS stack	CountStatistic	All	Medium	6
OutgoingMessageSize	DCSStats.outgoingMessageSize	Minimal, maximal, and average size (in bytes) of the messages that were sent through the DCS stack	Per DCS stack	AverageStatistic	All	High	7
ReceivedMessageCount	DCSStats.incomingMessageCounter	Number of messages received by the DCS stack	Per DCS stack	CountStatistic	All	High	8
RemoveViewChangeTime	DCSStats.splitTime	Amount of time that is consumed when splitting a group. The DCS stack is blocked during this time.	Per DCS stack	TimeStatistic	All	High	9
SentMessageCount	DCSStats.outgoingMessageCounter	Number of messages that were sent through the DCS stack	Per DCS stack	CountStatistic	All	High	10
SuspicionCount	DCSStats.suspectCounter	Number of times that the local member is suspected by other members	Per DCS stack	CountStatistic	All	High	11
SynchronizationCompleteTime	DCSStats.vsCompleteCurrentTime	Amount of time that is needed to guarantee that all view members are synchronized.	Per DCS stack	TimeStatistic	All	High	12
SynchronizationTimeoutCount	DCSStats.vsTimetoutExpiredCounter	Number of times that the synchronization procedure timed out.	Per DCS stack	CountStatistic	All	Medium	13
ViewChangeCount	DCSStats.viewCounter	Number of times that this member underwent view changes.	Per DCS stack	CountStatistic	All	Medium	14
ViewChangeTimeoutCount	DCSStats.mbrAlarmTimeoutCounter	Number of times that the view change procedure timed out.	Per DCS stack	CountStatistic	All	Medium	15
ViewGroupSize	DCSStats.groupSize	Size of the group to which the local member belongs.	Per DCS stack	AverageStatistic	All1	Medium	16