Contents - Raspberry PI Community Projects

65.1 + 48.8
69.5 + 29.1
90.8 + 91.4
1.3%us,
Arch Linux
61.9%sy,
2012-04-29
36.8%si
0.6%us,
Debian Wheezy
55.5%sy,
"Raspbian"
40.0%si
0.3%us,
62.2%sy, Gentoo Linux ARM
37.5%si
Additional Observations
Linux alarmpi
3.1.9-12+ #5 Sat Apr
28 04:49:38 UTC
2012 armv6l
ARMv6-compatible
processor rev 7 (v6l)
BCM2708 GNU/
Linux
Linux rpi 3.1.9+ #168
PREEMPT
Linux genpi
3.2.23-bootc #1
Remote host
connected at gigabit
Remote connected
at gigabit, values for
si between 30 and
55 %
Remote host
connected at
gigabit,
vm.min_free_kbytes
= 4096
Using netperf -H [netserver host IP] with Debian Wheezy and changing the CPU clock
rate, the TCP performance increased linearly from 61 Mb/s at 500 MHz to 80.6 Mb/s at
900 MHz.
Performance seems to improve considerably by dropping MTU from the default 1500 to
1488. However, this has caused kernel instabilities with Debian Squeeze images
(debian6-19-04-2012). It is unknown if this performance benefit is also gained on other
images, or if these kernel instabilities have been resolved.
Power
This table lists how much power is drawn over the 5V power cable whilst performing
various tasks.
Task
Booting
(without
peripherals)
Power
use
(mA)
120-400
Notes
Taken from Agilent lab power supply readings. No composite/
keyboard/mouse/network connected. HDMI was enabled but
the cable was disconnected.