20 iterations * 25 milisec/iteration = 500 milisecs or 0.5 seconds

Actually, the sum of your RTs is 23 milisec, but that's close enough for this explanation, as is the WAG that -w 15 will net (roughly) a thruput of 20 iterations.

In reply to Re^5: RRD-Ping getting values on right interval by ww
in thread RRD-Ping getting values on right interval by hello_world

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