Spikekill how to use? Will not remove one spike in a day

[tkmbe]

Hello

I've installed the pluggin spikekill and want to remove network trafic peaks of restarts of my routers.
The normal trafic is 100-200kbps after a restart I have a peak of 100Mbps.
Running spikekill with --method=variance --avgnan=avg several times did not the job.
There is no option to limit a peak i.e. drop everything above a leave a part the variation.
How can I solve my problem with this?
In one day I have a peak of one sample (5min) of 100Mbps and the tool is not removing this spike...
What do I wrong?

And is it not possible to start this tools from cacti directly (not in poller) for a graphic?

Greetings

Beat