Embedded Rule-based Management for Content-based DTNs - Advances in Network-Embedded Management and Applications - page 98

CPU Load by RON and Rmoon+PDP.

100

CPU used by RON
CPU used by Rmoon+PDP

80

60

40

20

0

0 50 100 150 200 250 300 350 400

Time (sec)

(a) CPU load at the Sensor

RAM used by RON and Rmoon+PDP.

1400

1200

1000

800

600

400

200

Memory used by RON
Memory used by Rmoon+PDP

0

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Time (sec)

(b) RAM used at the Sensor

Fig. 5. System Footprint Study.

The setup of this experiment follows the scenario described above. The prototype
sensor is an ASUS 520gu wireless router (as depicted in Figure 4 ) with 32MB of
RAM and OpenWRT Kamikaze operating system, connected to a general purpose
microprocessor board PICDEM FS USB. This device is running the notications bus
RON with the buer size set to 40 messages (about 12KB), the monitoring service
Rmoon and the Policy Decision Point described in Section 5.2. The measurements
depicted bellow are made on this device. The client is a Core 2 Duo PC running
RON.
The experiment runs during 380s. During the rst 10s ten watchers are sent
from the client arriving to the sensor during the rst 50s. Each of those watchers