Zoomable graphs:
When looking at the UC Berkeley Grid live Demo website I noticed that they implemented some nice graph zooming, i.e., when you click onto a single node metric graph or on one of the Grid overview graphs you get a nicely scaled bigger version of that graph. Of course, I wanted to have the same feature for my graphs, so I took a closer look at the generated HTML source and implemented that exact behavior.
Remarks:
- The trick is here to create a new graph size huge in ./graph.php and add the appropriate hyperlinks in ./templates/default/clusterview.tpl and ./templates/default/host_view.tpl.
- If you want different graph sizes for huge - currently they are set to width=1000 and height=600 - then you just have to adapt these values in ./graph.php in lines #69 and #70.
Jscalendar patch of Timothy D. Witham for selecting custom intervals for graph display
This patch of Timothy D. Witham enables the selection of customs intervals for graph display. It uses the DHTML jscalendar to select the start time and end time for the desired time interval.
This feature is available in cluster view mode and also in host view mode. Here is a screen shot if how it looks:
Custom graph patch of Alex Balk
This patch of Alex Balk adds the custom graph capability to the Ganglia web interface.
cpu_used statistics for IBM POWER systems
A cpu_used overview graph for the cluster_view template which - when clicked onto - produces a detailed cpu_used statistics graph for the whole cluster.
Remarks:
- The trick here is to create a new type of CPU report in ./graph.php called 'power_cpu_report' which is included into ./templates/default/clusterview.tpl.
- The information of the __SummaryInfo__ RRD database is used to generated the small image while for the detailed cpu_used graph all cluster members are searched for the cpu_used metric and then a graph is calculated which shows the effective CPU utilization of the whole IBM POWER system.
- In addition some changes were made to ./conf.php in order to
- define the colors for the new graphs
- change the default color for graphs (from GRAY to a more
friendly BLUE).
- to make cpu_used the default metric instead of load_one