The Performance Monitor displays a collection of statistics for one or more participating nodes. Statistics display in a dynamic chart in real time.
You can access the performance monitor at two different levels:
Multiplex level – monitor only one statistic, across multiple servers.
Server level – on a single server or a multiplex server, monitor up to ten statistics at a time.
In the Sybase Central tree view, select the server or multiplex, then click the Performance Monitor tab. You can change the type or contents of the performance monitor graphs.
Configuring data collection rates
The Configure Collection Rates dialog is available only for the server-level performance monitor. Use this dialog to change the rates at which statistics are collected. When the performance monitor displays, a multi-threaded data collection engine collects monitored statistics at two different rates. Less-expensive statistics are collected more frequently, while more-expensive statistics are collected less frequently. To change this default collection rate, configure the rates yourself.
In the Sybase Central tree view, select the server, then click the Performance Monitor tab.
Right-click in the chart area and select Configure Collection Rates.
Select the rates, in seconds, for statistics collection.
To reduce the impact on server performance, increase the rate values so that statistics are collected less frequently.
Click OK.
Changing the statistics that are monitored
The Configure Collection Rates dialog behaves differently for server-level monitoring and multiplex-level monitoring:
When you launch this dialog from the server-level performance monitor (the server can be a single server or a multiplex server), you can select up to ten statistics to monitor at a time.
When you launch it from the multiplex-level performance monitor, you can only monitor one statistic at a time.
Click the multiplex server, then click the Performance Monitor tab.
Right-click in the chart area and select Change Statistics.
Choose the statistics to monitor. “Monitoring performance statistics” lists all available statistics.
To save any changes, click OK.
Changing the servers that are monitored
The Change Servers to Monitor dialog is available only for the multiplex-level performance monitor.
Click the multiplex and switch to the Performance Monitor tab.
Right-click in the Performance Monitor chart and select Change Servers.
Select each server to monitor. Deselect any servers not to be monitored.
To save any changes, click OK.
You can save the chart as a .JPEG image file.
Right-click in the Performance Monitor chart and select Save Chart As.
Specify a file name for the .JPEG file.
Click Save.
You can print the performance monitor chart.
Right-click in the Performance Monitor chart and select Print Chart.
Review your print options and send the page to the desired printer.
You can choose between time-series, 2-D bar, and 3-D bar chart views.
Right-click the Performance Monitor chart and select Chart View.
Select Time Series Chart, Bar Chart 2-D Vertical, or Bar Chart 3-D Vertical.
To change chart settings and chart refresh (monitor GUI heartbeat) rate:
Right-click in the performance monitor chart area and select Customize Chart.
Change any of these components:
Time Window – appears only if the chart is a Time Series chart. Specify the period of time during which the data tracked to produce chart statistics. The minimum value is 1 minute. The maximum value is 240 minutes (4 hours).
Chart Refresh Rate – specify how often, in seconds, the data in the chart is refreshed. The chart refresh rate also shows at the bottom of the Performance Monitor panel.
Real vs. Normalized Value – Real Value (the default) reflects actual data. Normalized Value scales chart data into a fixed range. This option is for display purposes only, so that statistics with different ranges display better in one chart.
Legend – select to display or hide the legend.
To save any changes, click OK.
