On Monday 15 October 2007, Scott Walters wrote:
One of the most common requests to the trending of data is "How do I make the charts graph data samples which are smaller than 300 seconds?" And the answer has been, you have the source, have fun.
The original design decision that Henrik inherited was larrd should only be for capacity planning and NOT real-time performance analysis. Do one thing and do it well.
I had a thought the other day, and I think we could possibly get the "best of both worlds." I disagree. Hobbit is designed for monitoring-with-5-minutes interval. It will also create a 100 x load if you go fro; 5 minutes to 3 second intervals.
Same for the rrd size. My rrd dir is currently 154. I'm migrating to a new hobbit and I changed the rrds so I have 5760 and not 576 data ponints / rrd.
The new rrd's are 5921 MB. Going to a 3 second interval means 592100 MB = 593 GB ....... It's also possible that the hobbit client will generate more load then the applications ...
For real time monitoring, take a look at nmon.
http://www.ibm.com/developerworks/aix/library/au-analyze_aix/
The tool was original AIX only, but linux is also supported in the latest
releases. This is a tool that combines all other monitor tools in 1 screen.
Great tool.
Stef