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Home » Mailing list archives » linux-kernel » 2008 » April » 20

Re: Higer latency with dynamic tick (need for an io-ondemand govenor?)

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From: Andi Kleen <andi@...>
To: Woodruff, Richard <r-woodruff2@...>
Cc: Thomas Gleixner <tglx@...>, Ingo Molnar <mingo@...>, <linux-kernel@...>, <linux-pm@...>, <lenb@...>
Subject: Re: Higer latency with dynamic tick (need for an io-ondemand govenor?)
Date: Sunday, April 20, 2008 - 10:26 am

Woodruff, Richard wrote:

Sorry I was confused because you used the term "C-state" which is normally ACPI (x86/ia64) 
specific. If someone says C states I assume ACPI and usually x86 by default
due to lack of deeper sleep states on most ia64s.


On x86 the trend is for the hardware/firmware/SMM doing more and more of this on its own,
as in deciding by itself how deep it wants to sleep.

-Andi
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Messages in current thread:
bug seen with dynticks from CONFIG_HARDIRQS_SW_RESEND, Woodruff, Richard, (Wed May 16, 7:20 pm)
Re: bug seen with dynticks from CONFIG_HARDIRQS_SW_RESEND, Thomas Gleixner, (Thu May 17, 6:10 am)
RE: bug seen with dynticks from CONFIG_HARDIRQS_SW_RESEND, Woodruff, Richard, (Thu May 17, 4:14 pm)
RE: bug seen with dynticks from CONFIG_HARDIRQS_SW_RESEND, Thomas Gleixner, (Thu May 17, 4:38 pm)
RE: bug seen with dynticks from CONFIG_HARDIRQS_SW_RESEND, Woodruff, Richard, (Thu May 17, 6:24 pm)
RE: bug seen with dynticks from CONFIG_HARDIRQS_SW_RESEND, Thomas Gleixner, (Fri May 18, 3:49 am)
Higer latency with dynamic tick (need for an io-ondemand gov..., Woodruff, Richard, (Fri Apr 18, 11:43 am)
Re: Higer latency with dynamic tick (need for an io-ondemand..., Andi Kleen, (Sun Apr 20, 8:41 am)
RE: Higer latency with dynamic tick (need for an io-ondemand..., Woodruff, Richard, (Sun Apr 20, 10:21 am)
Re: Higer latency with dynamic tick (need for an io-ondemand..., Andi Kleen, (Sun Apr 20, 10:26 am)
Re: Higer latency with dynamic tick (need for an io-ondemand..., Arjan van de Ven, (Sun Apr 20, 2:19 am)
RE: Higer latency with dynamic tick (need for an io-ondemand..., Woodruff, Richard, (Sun Apr 20, 10:09 am)
Re: [linux-pm] Higer latency with dynamic tick (need for an ..., David Brownell, (Fri Apr 18, 11:45 pm)
Re: [linux-pm] Higer latency with dynamic tick (need for an ..., Thomas Gleixner, (Sat Apr 19, 3:13 am)
Re: [linux-pm] Higer latency with dynamic tick (need for an ..., , (Sat Apr 19, 6:49 pm)
Re: [linux-pm] Higer latency with dynamic tick (need for an ..., David Brownell, (Sat Apr 19, 11:51 pm)

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