Cydonia Kernel Build Notes

Tag drtabb

Version: linux-2.6.32.3

• using new atom cpu type.
• concern about:

CONFIG_X86_CPU=y
CONFIG_X86_L1_CACHE_BYTES=64
CONFIG_X86_INTERNODE_CACHE_BYTES=64

lshw reports 32 Kbyte L1 cache.

• CONFIG_PHYSICAL_ALIGN

previous kernel: CONFIG_PHYSICAL_ALIGN=0x200000
drtabb:          CONFIG_PHYSICAL_ALIGN=0x1000000

• Switched to GSPCA for usb cam.
• Turned off AGP
• Had to hand edit the .confg for get usb printers off , FFS
• Had to hand edit # CONFIG_VIRTUALIZATION is not set
• powertop recommend I turn on CONFIG_CPU_FREQ_STAT but it is part of CPU scaling and I'm trying CPU idle , mutually exclusive.
• powertop recommend I turn on CONFIG_CPU_FREQ_GOV_ONDEMAND but it is part of CPU scaling and I'm trying CPU idle , mutually exclusive.

Data reports

• http://software.intel.com/en-us/articles/power-efficiency-analysis-and-sw-development-recommendations-for-intel-atom-based-mid-platforms-2/
• power top graph.
• http://www.lesswatts.org/documentation/PowerMeasurements.pdf

Todo / Follow-up

• http://blogs.sun.com/rv/entry/powertop_gtk - some good links to gtk tutorial there.
• http://superuser.com/questions/14332/powertop-for-windows
• http://www.mvista.com/download/Embedded-Linux-power-management-on-Intel-Atom-processor.pdf
• [google://atom+c-states]
• http://techreport.com/articles.x/14458/4
• cat /proc/acpi/wakeup, SLPB, sleep button , toggle
• Put pci devices to sleep, setpci,lspci?
• go through the cpu flags and ensure I'm using all features best I can.
• http://www.lesswatts.org/documentation/PowerMeasurements.pdf
• build your own netdaq http://us.fluke.com/usen/Products/NetDAQ.htm