SmokePing is a deluxe latency measurement tool. It can measure, store and display latency, latency distribution and packet loss.
SmokePing uses RRDtool to maintain a longterm data-store and to draw pretty graphs, giving up to the minute information on the state of each network connection.
SmokePing comes with a smart alarm system. Apart from simple threshold alarms, you have the option of
...Licence : GPL 
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