Subject: Re: HR timers on PowerPC 83xx

From: Sergei Shtylyov <[email-masked]>
Date: Fri, 25 Apr 2008 19:59:32 +0400

Joakim Tjernlund wrote:

>>>Trying to understand what is needed to make nanosleep() and friends to
>>>have better resolution than HZ on my 83xx CPU. Is this possible
>>>and what CONFIG options do I need to enable? Kernel is 2.6.25

>>    Should be possible with CONFIG_HIGH_RES_TIMERS=y.

> What about NO_HZ? Does that setting change anything?

    It is independent from HRT and selects the mode where the idle process 
stops timer HZ interrupts from occuring until it's scheduled off CPU.

WBR, Sergei