[Ganglia-general] negative spikes on the aggregated summary plot

Hi all, I am seeing a strange behaviour on the aggregated summary plots whereby I see negative spikes that do not appear on any of the underlying clusters. These spikes can be quite frequent (every other pull...) Has anyone seen this before? Thanks Cumprimentos / Best regards, Cristóvão José

Re: [Ganglia-general] negative spikes on the aggregated summary plot

That sounds like it could be a signed/unsigned counter wrapping issue. This happens especially on counter metrics that store large values; network IO metrics are common offenders. There are a few "remove peaks/spikes" scripts floating around that may be of some help. On Mon, Nov 23, 2015 at 4:41