linux-kernel - Re: Power Saving

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <474236A0.8030601@zytor.com>
Date:	Mon, 19 Nov 2007 17:21:36 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Dave Jones <davej@...hat.com>,
	Stephen Clark <Stephen.Clark@...lark.us>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Power Saving

Dave Jones wrote:
>  > 
>  > and:
>  > cat /proc/acpi/processor/CPU0/throttling
>  > state count:             2
>  > active state:            T0
>  > states:
>  >    *T0:                  00%
>  >     T1:                  50%
> 
> See above. These are throttling states, used typically
> if the system is overheating.
> 

And more importantly, there is no power advantages over T states as 
opposed to C states.  They pretty much mean pulsing the system in and 
out of either C1 or C2 depending on the CPU/chipset.

	-hpa
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/