Oracle Coherence Monitor

User Guide

 

Using the Monitor - Single Node
Single Node displays present detailed node performance metrics for a single node. Use the Single Node displays to perform node utilization analysis.

NOTE: Click the button to view the current display in a new window.

Node Summary
This display presents summary information about an individual node.

Cluster Select a cluster from the drop-down menu.
Detail View Node Detail display.
 
Host Select a host from the drop-down menu.
Location Select a location from the drop-down menu.
Id The id for the selected node.
 
Member The member name for this node.
Machine The machine name for this node.
Rack The rack name for this node.
Site The site name for this node.
Role The role name for this node.
Process The process name for this node.
Uni Address The unicast address. This is the IP address of the node's DatagramSocket for point-to-point communication.
Unicast Port The unicast port. This is the port of the node's DatagramSocket for point-to-point communication.
CPU Count Number of CPU cores for the machine this node is running on.
Start Time The date and time that the selected node joined the cluster.
 
Cache Data Cache Name Name of Cache.
Tier Front or Back.
Objects Number of objects.
Units Number of units (typically bytes).
Packet Communication Sent Cumulative number of packets sent by this node since the node statistics were last reset.
Rcvd Cumulative number of packets received by this node since the node statistics were last reset.
Resent % Cumulative number of packets resent by this node since the node statistics were last reset.
Rptd % Cumulative number of packets repeated by this node since the node statistics were last reset.
Send Queue The number of packets currently scheduled for delivery, including packets sent and still awaiting acknowledgment. Packets that do not receive an acknowledgment within the ResendDelay interval are automatically resent.
Memory Max MB Total memory allocated.
Avail MB Total memory available.
Used % Percent of allocated memory being used.
 
Base at Zero Use zero as the Y axis minimum for all graph traces.
Time Range Select a time range or All Data from the drop-down menu. By default, the ending period for displayed data is the current time. To specify a time range:

1. Click the  button to open the calendar dialog. By default, the time range end point is the current time.

2. Change the time range end point by clicking the  button and selecting the date and time, then click OK. Or enter the date and time in the text field using the following format: MMM dd, YYYY HH:MM:ss. For example, Apr 26, 2012 5:01 PM.

3. Click Apply. The navigation arrows  appear. 

4. Use the navigation arrows  to move forward or backward one time period (the time period selected from the Time Range drop-down menu). Click Restore to Now to reset the time range end point to the current time.
Sent Fail Rate Percentage of communication packages on this node that failed and needed to be resent.
Rcvd Fail Rate Percentage of received communication packages that failed and needed to be repeated.
Mem Used % Percent of memory used by the node.
CPU % Percent of CPU used by the node.

 

Service Trends

Trend graphs showing metrics on a selected node of a selected service. Allows you to visually compare the behavior of metrics over time, for a given node.

Cluster Select a cluster from the drop-down menu.
 
Service Select a service to display.
Host Select a host.
Location A unique identifier for each node. It is defined as: member_name.machine.rack.site.
 
Log Scale Enable to use a logarithmic scale for the Y axis. Use Log Scale to see usage correlations for data with a wide range of values. For example, if a minority of your data is on a scale of tens, and a majority of your data is on a scale of thousands, the minority of your data is typically not visible in non-log scale graphs. Log Scale makes data on both scales visible by applying logarithmic values rather than actual values to the data.
Base at Zero Use zero as the y-axis minimum for all graph traces.
Time Range Select a time range or All Data from the drop-down menu. By default, the ending period for displayed data is the current time. To specify a time range:

1. Click the  button to open the calendar dialog. By default, the time range end point is the current time.

2. Change the time range end point by clicking the  button and selecting the date and time, then click OK. Or enter the date and time in the text field using the following format: MMM dd, YYYY HH:MM:ss. For example, Apr 26, 2012 5:01 PM.

3. Click Apply. The navigation arrows  appear. 

4. Use the navigation arrows  to move forward or backward one time period (the time period selected from the Time Range drop-down menu). Click Restore to Now to reset the time range end point to the current time.
Metrics for Service selected by Location Trend chart displays the values of labeled Metrics for the selected Location (i.e. node) over the specified Time Range.
CPU% CPU Utilization (as a %) on the selected  Location (i.e. node).
Requests Number of requests issued by the service in the measured period.
Messages The number of messages for the given node in the measured interval.
Request Average Duration Average duration (in milliseconds) of an individual request issued by the service since the last time the statistics were reset.
Request Pending Count Number of pending requests issued by the service.
Task Backlog Size of the backlog queue that holds tasks scheduled to be executed by one of the service threads.
Active Threads Number of threads in the service thread pool, not currently idle.

 

Node Detail
 This display presents detailed information about invocation services per node. The data on this display is queried from the Coherence MBeans. NOTE: For details on attributes of these MBeans go to:  http://download.oracle.com/otn_hosted_doc/coherence/350/com/tangosol/net/management/Registry.html.

Cluster Select a cluster from the drop-down menu.
Summary View Node Summary display.
 
Host Select a host.
Location Select a location.
 
Node MBean Data This table contains data from the Node MBean for the selected node.
 
Invocation Service MBean Data This table contains data from the Invocation Services MBean for the selected node.
 
Cache Service MBean Data This table contains data from the Cache Service and Node MBeans associated with the selected node.
 
Cache MBean Data This table contains data from the Cache MBeans associated with the selected node.
 
Storage Manager MBean Data This table contains data from the Storage Manager MBeans associated with the selected node.

 

JVM Summary
 Runtime, class loader, thread, OS and input arguments. NOTE: Platform MBean information is available at: http://java.sun.com/javase/6/docs/api/java/lang/management/package-summary.html#package_description.

Cluster Select a cluster from the drop-down menu.
 
Host Select a host.
Location Select a location.
Id Select a node id.
 
Runtime Start Time The date and time that the JVM started.
Up Time The uptime of the JVM.
 
Class Loader Loaded Classes The number of classes that are currently loaded in the JVM.
Unloaded Classes The total number of classes unloaded since the JVM started execution.
Total Loaded Classes The total number of classes that have been loaded since the JVM started execution.
 
Compilation Compilation Time The approximate accumulated elapsed time (in milliseconds) spent in compilation. If multiple threads are used for compilation, then this value is a summation of the approximate time that each thread spent in compilation.

NOTE: Compilation Time monitoring may not be supported depending on the platform (e.g.: a Java virtual machine implementation).
 
Threads Live Threads The number of live threads.
Daemon Threads The number of live daemon threads.
Peak Threads The peak live thread count since the Java virtual machine started or peak was reset.
 
Operating System Operating System Name The operating system name.
Version The operating system version.
Architecture The operating system architecture.
Available Processors The number of processors available to the JVM.
Percent CPU Percent of CPU used by the JVM.
Total Swap Space Size The value of the OperatingSystemMXBean's TotalSwapSpaceSize attribute.
Free Swap Space Size The value of the OperatingSystem MXBean's FreeSwapSpaceSize attribute.
Total Physical Memory The value of the OperatingSystemMXBean's TotalPhysicalMemorySize attribute
Free Physical Memory The value of the OperatingSystemMXBean's FreePhysicalMemorySize attribute
Committed Virtual Memory The value of the OperatingSystemMXBean's CommittedVirtualMemorySize attribute
 
Input Arguments The list of JVM arguments in the RuntimeMXBean's InputArguments attribute

 

JVM Memory Trends
Heap and non-heap memory trends. NOTE: Platform MBean information is available at: http://java.sun.com/javase/6/docs/api/java/lang/management/package-summary.html#package_description.

Cluster Select a cluster from the drop-down menu.
 
Host Select a host.
Location Select a location.
Id Select a node id.
 
Base at Zero Use zero as the Y axis minimum for all graph traces.
Time Range Select a time range or All Data from the drop-down menu. By default, the ending period for displayed data is the current time. To specify a time range:

1. Click the  button to open the calendar dialog. By default, the time range end point is the current time.

2. Change the time range end point by clicking the  button and selecting the date and time, then click OK. Or enter the date and time in the text field using the following format: MMM dd, YYYY HH:MM:ss. For example, Apr 26, 2012 5:01 PM.

3. Click Apply. The navigation arrows  appear. 

4. Use the navigation arrows  to move forward or backward one time period (the time period selected from the Time Range drop-down menu). Click Restore to Now to reset the time range end point to the current time.
 
Heap Memory Maximum The value of the max field within the MemoryMXBean HeapMemoryUsage attribute..
Committed The value of the committed field within the MemoryMXBean HeapMemoryUsage attribute.
Used The value of the used field within the MemoryMXBean HeapMemoryUsage attribute.
Peak Tenured Used The value of the used field within the TenuredGen MemoryPoolMXBean PeakUsage attribute.
 
Non-Heap Memory Maximum The value of the max field within the MemoryMXBean NonHeapMemoryUsage attribute.
Committed The value of the committed field within the MemoryMXBean NonHeapMemoryUsage attribute.
Used The value of the used field within the MemoryMXBean NonHeapMemoryUsage attribute.
Objects Pending Finalization The value of the MemoryMXBean ObjectPendingFinalizationCount attribute.
Verbose The value of the MemoryMXBean Verbose attribute.
 
Garbage Collection name Name of the Garbage Collector MBean.
LastGcInfo.Count The GcThreadCount from the Garbage Collector's LastGcInfo MBean.
LastGcInfo.Duration The Duration from the Garbage Collector's LastGcInfo MBean.
 
Operations Run Garbage Collector Executes the MemoryMXBean gc operation.
Reset Peak Usage Executes the TenuredGen resetPeakUsage operation.

 

JVM GC Trends
Memory usage before and after garbage collection and Garbage Collector activity.  NOTE: Platform MBean information is available at: http://java.sun.com/javase/6/docs/api/java/lang/management/package-summary.html#package_description.

Cluster Select a cluster from the drop-down menu.
 
Host Select a host.
Location Select a location.
Id Select a node id.
 
Garbage Collector Select a Garbage Collector.
Max Select to add the Max trace (graph will rescale if necessary).
Committed Select to add the Committed trace (graph will rescale if necessary).
Base at Zero Use zero as the Y axis minimum for all graph traces.
Time Range Select a time range or All Data from the drop-down menu. By default, the ending period for displayed data is the current time. To specify a time range:

1. Click the  button to open the calendar dialog. By default, the time range end point is the current time.

2. Change the time range end point by clicking the  button and selecting the date and time, then click OK. Or enter the date and time in the text field using the following format: MMM dd, YYYY HH:MM:ss. For example, Apr 26, 2012 5:01 PM.

3. Click Apply. The navigation arrows  appear. 

4. Use the navigation arrows  to move forward or backward one time period (the time period selected from the Time Range drop-down menu). Click Restore to Now to reset the time range end point to the current time.
Memory Usage (in MB) Before and After Garbage Collection Max The maximum amount of memory used by the node or nodes.
Committed The amount of memory guaranteed to be available for use by the JVM.
Used - Before The amount of memory used by the node or nodes before garbage collection.
Used - After The amount of memory used by the node or nodes after garbage collection.
Duration The duration, in seconds, that memory is used by the node or nodes.
Duty Cycle Percent of time spent by the node or nodes in garbage collection.

 

System Properties
Table of Java properties for a selected node.

Cluster Select a cluster from the drop-down menu.
 
Host Select a host.
Location Select a location.
Id Select a node id.
 
java.runtime.version The value of the RuntimeMXBeans's VmVersion attribute.
 
System Properties This table contains the attribute/value pairs from the RuntimeMXBean's SystemProperties attribute.

 

 

 


 

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