Server performance data
The Overview page displays charts of the aggregate performance data for the App Servers selected in the filter. The charts are described in the following table.
Chart |
Description |
|---|---|
App Server Request Rate |
The total number of requests being processed per second, across all of the App Servers. |
App Server Latency |
The average time (in seconds) it takes to process queries, across all of the App Servers. |
Task Server Queue Size |
The number of tasks in the Task Server queue. |
Expanded Tree Cache Hits/Misses |
The number of times per second that queries could use (Hits) and could not use (Misses) the expanded tree cache. |
With the exception of the Task Server Queue Size chart, which only displays the queue size for the one task server, the color-coded metrics for the server charts are as shown in the following table.
Metric |
Description |
|---|---|
HTTP |
The metrics for the HTTP servers. |
ODBC |
The metrics for the ODBC servers. |
WebDAV |
The metrics for the WebDAV servers. |
XDBC |
The metrics for the XDBC servers. |
Task |
The metrics for the Task server. |
Click on the arrow in the upper left-hand section of the SERVERS graph in the Overview page to view graphs that present more detailed performance metrics for each App Server. The charts displayed on the SERVERS DETAIL page are described in the following table.
Note
If there are multiple groups defined, server names have the group that they are associated with in square brackets in the legend and rollovers.
The number of servers displayed out of the number of servers of each type in the cluster (for example, HTTP) is shown in the upper right-hand section of each server type group.
The following detailed charts are displayed for each type of App Server:
Chart |
Description |
|---|---|
Request Rate |
The number of queries being processed per second by each App Server. |
Latency |
The average time it takes each App Server to process queries. |
Expanded Tree Cache Rate Hits |
The number of times queries could use the expanded tree cache on each App Server. |
Expanded Tree Cache Rate Misses |
The number of times queries could not use the expanded tree cache on each App Server. |
Queue Size (Task Server only) |
The number of tasks in the Task Server queue on each host. |
Send Rate (for any type of App Server except Task Server) |
Throughput of application servers of that type sending data, in megabytes per second. |
Receive Rate (for any type of App Server except Task Server) |
Throughput of application servers of that type receiving data, in megabytes per second. |