ganglia/monitor-core — pull request #115 by dcbradley (2013-07-05 22:26:26+00:00)
Title: Treat GANGLIA_SLOPE_DERIVATIVE as valid

When --slope=derivative is passed to gmetric, it currently generates the following error message and exits unsuccessfully:

gmetric parameters invalid. exiting.

libganglia also fails to work correctly when Ganglia_metric_set() is passed a slope value of GANGLIA_SLOPE_DERIVATIVE.