Bureaucrats, dave_user, Administrators
4,650
edits
Changes
→Heavy load configurations
|-
|}
[1] In this condition, Linux kernel spends most of the time in idle state because user space applications and interrupt service routines run for very short periods. However, LCD is turned on (LCD power consumption is about 600mA600mW).
Additional notes and reference:
* U-boot is set to work at 396MHz
* At U-boot prompt the LCD interface and circuitry are in turned off state* At Linux prompt, a fixed clock frequency of 528MHz has been set (<code>userspace </code> governor)* All the measures include Ethernet link at 100M, and power requirement for two USB memory sticks and an uSD card* <code>StressAppTest </code> application is used to stress CPU and DDR3 DDR3L RAM (https://github.com/stressapptest/stressapptest)* A 4.3 inches 480x272 LCD is used to test the 24bit parallel video interface output. The LCD backlight is driven by the 12V VIN using an external circuitry at ; brightness is set to 100% brightness
* Complete Stress Test includes the following tests:
** <code>StressAppTest</code>** USB Host: read/write/verify operations on an USB memory stick** USB otg tested as Host: read/write/verify operations on an USB memory stick** uSD card: read/write/verifyoperations** ETHEthernet: <code>iperf </code> TCP test running at 100Mbps** NAND: stress test with <code>mtd </code> kernel modules* All the measurements include**active Ethernet link at 100Mbp**power consumption of two USB memory sticks**power consumption uSD card.
==Idle configurations==
