Linked by Thom Holwerda on Fri 18th Sep 2009 17:30 UTC, submitted by Moulinneuf
Hardware, Embedded Systems We all know (and love?) ARM as the company which focusses on licensing designs for power-efficient yet still powerful processors, mostly used in embedded devices. The Cambridge company has been looking to expand into the netbook market, and has now announced a new step in this process with a number of new multicore Cortex-A9 designs.
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Me wants!
by SReilly on Fri 18th Sep 2009 18:02 UTC
SReilly
Member since:
2006-12-28

My ASUS 901 runs Ubuntu so for me, to see a netbook running one of these chips would be fantastic. I want raw performance AND power efficiency, I don't see why I should settle for just one of the two.

I'm hoping that when it's ready, they port Haiku to ARM as then I think all my netbook dreams would come true :-). Until then, Linux will do fine.

That said, does anybody know of a good mainstream disto release for the ARM architecture?

Reply Score: 4

RE: Me wants!
by Earl Colby pottinger on Fri 18th Sep 2009 18:14 in reply to "Me wants!"
Earl Colby pottinger Member since:
2005-07-06

There already is work underway to port Haiku to ARM so don't be surprised if there is something bootable in the next year or so.

Question: It is my understanding that BeOS/Haiku uses the 'HALT' instruction to lower power use when the CPU is idle and waiting for an interrupt, does the ARM have such an instruction/mode and if it does how much power is used compared to normal CPU needs?

I am thinking in term of a large number of cores when a number of them will sit idle when there is not a heavy load on the system.

Reply Parent Score: 2

RE[2]: Me wants!
by Bahadir on Fri 18th Sep 2009 18:31 in reply to "RE: Me wants!"
Bahadir Member since:
2007-05-19

There is a WFI (Wait For Interrupt) instruction that puts the cpu to idle mode. Currently supported by Linux on MPCore

Reply Parent Score: 2

RE[2]: Me wants!
by kaiwai on Sat 19th Sep 2009 01:03 in reply to "RE: Me wants!"
kaiwai Member since:
2005-07-06

There already is work underway to port Haiku to ARM so don't be surprised if there is something bootable in the next year or so.

Question: It is my understanding that BeOS/Haiku uses the 'HALT' instruction to lower power use when the CPU is idle and waiting for an interrupt, does the ARM have such an instruction/mode and if it does how much power is used compared to normal CPU needs?

I am thinking in term of a large number of cores when a number of them will sit idle when there is not a heavy load on the system.


From what I understand Haiku is based on the NewOS kernel which includes support inside it for multiplatformness.

The problem with Linux is the need to get rid of HAL and replace it with something that doesn't depend on a constant cycle of polling. Once HAL is replaced you'll find that battery life will improve considerably when combined with the improvements that are slated for 2.6.32.

Reply Parent Score: 2

RE: Me wants!
by Bahadir on Fri 18th Sep 2009 18:30 in reply to "Me wants!"
Bahadir Member since:
2007-05-19

Ubuntu will be soon available for ARM (in fact there is a version that currently works)

Reply Parent Score: 5

RE: Me wants!
by lemur2 on Sat 19th Sep 2009 13:46 in reply to "Me wants!"
lemur2 Member since:
2007-02-17

That said, does anybody know of a good mainstream disto release for the ARM architecture?


Canonical are working on a version of Ubuntu for ARM.

Debian have had an ARM port for ages.

http://www.debian.org/ports/arm/

Reply Parent Score: 2

Mainstream Distro fro ARM?
by gfolkert on Mon 21st Sep 2009 06:12 in reply to "Me wants!"
gfolkert Member since:
2008-12-15

That said, does anybody know of a good mainstream disto release for the ARM architecture?


Ummm, Debian?

Has been for a while. ARM and ARM-EL since, like *FOREVER*...

Reply Parent Score: 1