Lots of data is collected over the duration of a load test, particularly if your sampling rate is high - say every second.
Quite obviously, therefore, if you increase the granularity during graph creation/display ( say from 2 seconds to 10), you are choosing to look at a smaller set of points. Think of it as a zoom out - so the graph looks smoother and trends are easier to identify. As a converse, reducing the granularity creates the graph with a much larger set of points and micro-trends and individual readings become visible - like a zoom in.
Suresh Nageswaran, CQA, CSTE
Pune, India. email@example.com
<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by mh4201: How does changing granularity affect the load test graphs in load runner?<HR></BLOCKQUOTE>Two examples:
1) All counters are changing steadily.
Granuality won't affect anything.
2) You have some spikes.
Smaller granularity would make peaks higher.