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The Raspberry belongs to Bebo White and it is the version 1 of Raspberry Pi, model B. The cost is about $25/each + costs of the SD card. The Raspberry purchased each has 512MB RAM, on a 700Mhz ARM CPU and a 32GB SD Card was used. They have 2 USB and 1 100Mb/s Ethernet interfaces and 1 HDMI port. Keep in mind that is necessary to have a keyboard, a mouse and a HDMI monitor to do the installation process, but once that Pinger is working they are not necessary anymore. We measured the power (Wattage) during normal use and it is 2.7 Watts. When using the Dell mouse with an LED powered from the Raspberry Pi it crept up to 3.2Watts.
Operating System
The installed system is called Raspbian a Debian Linux variant. The OS had Perl, Make, dig, ping and mail installed. We accessed it through the graphic interface of Raspbian. We just had to install: Apache and XML::Simple.
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Obs: Make sure to change the default password for Raspbian.
Analysis
Example target = pinger.unimas.my (~220 msec.)
For both 100Byte and 1000 Byte pings (not shown above) the round trip time series for RTTs have similar behaviour and there are similar losses 7:10 (pinger : pinger-raspberry for 100 Byte pings), note the different Y scales for losses. The losses are about double for 1000Byte pings.
| Time Series | Frequency Distributions |
|---|---|
 |  |
 |  |
Example sitka.triumf.ca (~22msec.)
| Time series | Frequency distributions |
|---|---|
 |  |
 |  |
Between pinger.slac.stanford.edu and pinger-blackberry.slac.stanbford.edu
