Administration guide > Monitor the environment > Monitoring with the web console
View statistics with the web console
You can monitor statistics and other performance information with the web console.
Before you begin
Before you can view statistics with the web console, complete the following tasks:
- Start the web console server. See Start and logging in to the web console for more information.
- Connect the catalog servers to the web console server. See Connect the web console to catalog servers for more information.
- Run active data grids and applications within the servers that are managed by the catalog service domain.
After you create the data grids and configure the applications to use the data grids, allow some time to pass for the statistics to become available. For example, with a dynamic cache data grid, statistics are not available until a WebSphere Application Server that is running a dynamic cache connects to the dynamic cache. In general, wait up to one minute after a major configuration change to see the changes in the statistics.
Tip: To view more specific information about any data point in a chart, you can move the mouse pointer over the data point.
Procedure
- To view the current server statistics, click Monitor > Server Overview.
Server statistics
- Used Memory
- Displays the current amount of used (real) memory in the server run time. Only top 25 servers that are using the most memory are displayed.
- Total Memory Over Time
- Displays the real memory usage in the server run time.
- Used Memory Over Time
- Displays the amount of used memory in the server run time.
- To view the performance of all of the data grids, click Monitor > Data grid domain overview.
Data grid domain overview statistics
- Current Data Grid Used Capacity Distribution
- This chart contains a picture of the total pool, and the top used capacity consumers. Only the top 25 data grids are displayed.
- Top 5 Data Grids by Average Transaction Time in Milliseconds
- This chart contains a list of the top five data caches, organized by the average transaction time.
- Top 5 Data Grids by Average Throughput in Transactions/Second
- This chart contains a list of the top five data grids, organized by the average throughput, organized by transactions/second
- To view individual data grids, click Monitor > Data grid overview > data_grid_name. This page shows a summary that includes the number of cache entries, the average transaction time, and average throughput. You can also view the following charts:
Data grid overview statistics
- Current summary
- Displays such statistics as the current number of objects cached in this grid (cache entries), the average transaction time, and the average transaction throughput.
- Used capacity vs. Number of cache entries
- This chart shows the used capacity of the cache versus the number of entries in the cache. You can edit the time range that is displayed: last hour, last day, last week, last month. The level of detail that is shown on the chart varies depending on the time range that you select.
- Total cache get requests vs. Successful cache get requests
- This chart helps to visualize the number of successful queries to the cache.
- To view further details about a specific data grid, click Monitor > Data grid details. A tree displays with all of the data grids in the configuration. You can drill down into a specific data grid to view the maps that are a part of that data grid. You can either click a data grid name or a map for further information.
Data grid statistics
- Current summary
- View the current used capacity, and a list of zones to which the data grid belongs.
- Current eXtreme Scale Object Grid Map Used Capacity Distribution
- View a total pool, which includes the capacity by zone and the total capacity in each zone. Only the top 25 ObjectGrid maps are displayed.
- Current Zone Used Capacity Distribution
- View a zone, which includes the total pool and the top used capacity consumers. Only the top 25 zones are displayed.
Map statistics
- Current summary
- Displays statistics such as:
- Used Capacity
- View the used capacity, and a list of zones to which the map belongs.
- Number of Cache Entries
- Displays the number of objects cached in the map.
- Average Transaction Time (ms)
- Displays the average completion time for transactions involving this map.
- Average Transaction Throughput (trans/sec)
- Displays the average number of transactions per second, involving this map.
- Current Partition Used Capacity Distribution
- This chart contains a picture of the total pool, and the top used capacity consumers. Only the top 25 partitions are displayed.
- To choose which statistics you would like the custom report to contain, click Monitor > Custom reports.
Use this view to construct detailed data charts of the various statistics. Use the tree to explore the available data grids and servers and their associated statistics. A menu opens when you click or press enter on a node that references data that can be charted. Create a new chart containing the statistics, or add the statistics into an existing chart with compatible statistics.
Domain statistics
- Average Transaction Time (ms)
- Displays the average time required to complete a transaction in this domain.
- Average Transaction Throughput (trans/sec)
- Displays the average number of transactions per second in this domain.
- Maximum Transaction Time (ms)
- Displays the time spent by the most time-consuming transaction in this domain.
- Minimum Transaction Time (ms)
- Displays the time spent by the least time-consuming transaction in this domain.
- Total Transaction Time (ms)
- Displays total time spent on transactions in this domain, since the time the domain was initialized.
eXtreme Scale container statistics
- Average Transaction Time (ms)
- Displays the average time required to complete a transaction for this catalog server.
- Average Transaction Throughput (trans/sec)
- Displays the average number of transactions per second for this catalog server.
- Maximum Transaction Time (ms)
- Displays the time spent by the most time-consuming transaction for this catalog server.
- Minimum Transaction Time (ms)
- Displays the time spent by the least time-consuming transaction for this catalog server.
- Total Transaction Time (ms)
- Displays total time spent on transactions for this catalog server, since the time for this catalog server was initialized.
- Total Entries in Cache
- Displays the current number of objects cached in the grids overseen by this catalog server.
- Maximum Entries in Cache
- Displays the maximum number of objects cached in the grids overseen by this catalog server.
- Minimum Entries in Cache
- Displays the minimum number of objects cached in the grids overseen by this catalog server.
- Hit rate (percentage)
- Displays the hit rate (hit ratio) for the selected data grid. A high hit rate is desirable. The hit rate indicates how well the grid is helping to avoid accessing the persistent store.
- Used Bytes
- Displays memory consumption by this map. The used bytes statistics are accurate only when you are using simple objects or the COPY_TO_BYTES copy mode.
- Minimum Used Bytes
- Displays the low point in memory consumption by this catalog service and its maps. The used bytes statistics are accurate only when you are using simple objects or the COPY_TO_BYTES copy mode.
- Maximum Used Bytes
- Displays the high point in memory consumption by this catalog service and its maps. The used bytes statistics are accurate only when you are using simple objects or the COPY_TO_BYTES copy mode.
- Total Number of Hits
- Displays the total number of times the requested data was found in the map, avoiding the need to access persistent store.
- Total Number of Gets
- Displays the total number of times the map had to access the persistent store to obtain data.
- Free Heap (MB)
- Displays the actual amount of heap available to the JVM being used by the catalog server.
- Total Heap
- Displays the amount of heap available to the JVM being used by this catalog server.
- Used Memory
- Displays the used memory in the JVM being used by this catalog server.
- Number of Available Processors
- Displays the number of CPUs available to this catalog service and its maps. For the highest stability, run the servers at 60% processor loading and JVM heaps at 60% heap loading. Spikes can then drive the processor usage to 80–90%, but do not regularly run the servers higher than these levels
- Maximum Heap Size (MB)
- Displays the maximum amount of heap available to the JVM being used by this catalog server.
Grid statistics
- Average Transaction Time (ms)
- Displays the average time required to complete transactions involving this grid.
- Average Transaction Throughput (trans/sec)
- Displays the average number of transactions per second completed by this grid.
- Maximum Transaction Time (ms)
- Displays the time spent by the most time-consuming transaction completed by this grid.
- Minimum Transaction time (ms)
- Displays the time spent by the least time-consuming transaction completed by this grid.
- Total Transaction Time (ms)
- Displays the total amount of transaction processing time for this grid.
Map statistics
- Total Entries in Cache
- Displays the current number of objects cached in this map.
- Maximum Entries in Cache
- Displays the maximum number of objects cached in this map since the time the map was initialized.
- Minimum Entries in Cache
- Displays the minimum number of objects cached in this map since the time the map was initialized.
- Hit Rate (percentage)
- Displays the hit rate (hit ratio) for the selected map. A high hit rate is desirable. The hit rate indicates how well the map is helping to avoid accessing the persistent store.
- Used Bytes
- Displays memory consumption by this map. The used bytes statistics are accurate only when you are using simple objects or the COPY_TO_BYTES copy mode.
- Minimum Used Bytes
- Displays the minimum consumption (in Bytes) for this map. The used bytes statistics are accurate only when you are using simple objects or the COPY_TO_BYTES copy mode.
- Maximum Used Bytes
- Displays the maximum consumption (in Bytes) for this map. The used bytes statistics are accurate only when you are using simple objects or the COPY_TO_BYTES copy mode.
- Total Number of Hits
- Displays the total number of times the requested data was found in the map, avoiding the need to access persistent store.
- Total Number of Gets
- Displays the total number of times the map had to access the persistent store to obtain data.
- Free Heap (MB)
- Displays the current amount of heap available to this map, in the JVM being used by the catalog server.
- Total Heap (MB)
- Displays the total amount of heap available to this map, in the JVM being used by the catalog server. For the highest stability, run the servers at 60% processor loading and JVM heaps at 60% heap loading. Spikes can then drive the processor usage to 80–90%, but do not regularly run the servers higher than these levels
- Used Memory (MB)
- Displays the used amount of memory in this map.
- Number of Available Processors
- Displays the number of CPUs available to this map. For the highest stability, run the servers at 60% processor loading and JVM heaps at 60% heap loading. Spikes can then drive the processor usage to 80–90%, but do not regularly run the servers higher than these levels
- Maximum Heap Size (MB)
- Displays the maximum amount of heap available to this map, in the JVM being used by the catalog server.
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