Oracle Coherence Monitor

User Guide

 

Using the OC Monitor - All Caches
All Caches displays present high-level cache performance metrics for the cluster. Use the All Caches displays to quickly assess total utilization metrics for all caches in the cluster.  

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

All Caches Heatmap
Heatmap of cache size and activity organized by service: Size = Number of Units, Color = Percent of Total Gets.

Cluster Select a cluster from the drop-down menu.
Chart Toggle between heatmap view and chart view.
   
Service Select a service to display.
% Set the activity percentage that maps to the maximum color value. Percentages greater than this value map to the maximum color value.
   
Log Scale (Activity) 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.
Cache Labels Select to display cache labels.
Cumulative Select to show cumulative statistics for each cache.
   
Heatmap of Caches organized by Service/Cache Activity heatmap where the activity metric is TotalGets. The levels of this heatmap are Service>Cache. The size of the cells is based on Units. The size of aggregate cells is based on the sum of the Units used by its component cells. The color of the cache cells is based on TotalGets.

 

Storage Nodes Cache Map
Heatmap of memory usage on all storage nodes organized by service: Size = Number of Units, Color = Percent of Units Used.

Cluster Select a cluster from the drop-down menu.
   
Host to Show Select a host to display.
Memory Used % Set the memory used percentage that maps to the maximum color value. Percentages greater than this value map to the maximum color value.
   
Service Select a service to display, or select All Services.

NOTE: When you select a specific service, only data for nodes running that service is displayed. This enables you to view services that only run on a subset of nodes.
Ignore High Units Select to remove High Units from calculations. This results in all caches having 100% units used. The color of cache cells represents units used instead of percent Units used when this option is selected.
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.
Cell Borders Select to display heatmap cell borders.
Node Labels Select to display node labels.
   
Heatmap of Nodes organized by Service/Cache A heatmap of memory usage. The levels of this heatmap are Host>Node>Service>Cache. The size of the cells is based on Units. The size of aggregate cells is based on the sum of the Units used by its component cells. The color of cache cells is based on the percent of Units used unless Ignore High Units is selected.

 

Current Size Chart
 Toggle between bar chart and table views that present the latest values of total objects and total units for each cache in the selected service.

Cluster Select a cluster from the drop-down menu.
Table Toggle between chart view and table view.
 
Service Select a service to display.
Front Select for front tier, deselect for back tier.
Cache Count Number of caches in the selected server. This is not available in the Table view.
 
Current Size Chart Total Objects in each Cache summed over all Storage Nodes This is the default view. Toggle between totals for Object Count and Units Used.

Click the Table button to view Current Size Table.

 Objects Object Count Total number of objects in this cache.
Units Units Used Highest number of units before evictions occur.
Ignore High Units Removes High Units bars from view.
 
Current Size Table Totals for each Cache over all Storage Nodes Click Chart button to view Current Size Chart. shortCacheName Abbreviated name of cache
tier Front or back
Objects Total number of objects in this cache
Units Total number of units (typically bytes) in this cache
LowUnits Low limit for cache evictions
HighUnits Highest number of units before evictions occur
Service Name of selected service(s).
Name Full name of cache

 

Current Activity Chart
Toggle between bar chart and table views that present the latest values for activity metrics for each cache in the selected service.

Cluster Select a cluster from the drop-down menu.
Table Toggle between chart view and table view.
 
Service Select a service to display.
Front Select for front tier, deselect for back tier.
Cache Count Number of caches in the selected server. This is not available in the Table view.
Cumulative Select to show cumulative statistics for each node since the start of the node.
 
Current Activity Chart Totals for each Cache over all Storage Nodes. This is the default view.

Click the Table button to view Current Activity Table.

 

 Sort By
Cache Misses Total number of failed gets
Cache Hits Total number of successful gets
Total Puts Total data stores into this cache
Total Gets Total requests for data from this cache
 
Current Activity Table Totals for each Cache over all Storage Nodes. Click Chart button to view Current Activity Chart. Cache Abbreviated name of cache
tier Front or back
Hits Total number of successful gets
Misses Total number of failed gets
Gets Total requests for data from this cache
Puts Total data stores into this cache
Hit % Ratio of hits to gets
Service Service Name
Cache Full Name Full name of cache

 

 

 


 

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