Gentoo Archives: gentoo-user

From: Nikos Chantziaras <realnc@×××××.de>
To: gentoo-user@l.g.o
Subject: [gentoo-user] Re: Custom Timer Frequency (CONFIG_HZ)?
Date: Thu, 11 Aug 2011 07:28:22
Message-Id: j2007f$h1r$1@dough.gmane.org
In Reply to: [gentoo-user] Custom Timer Frequency (CONFIG_HZ)? by Pandu Poluan
1 On 08/11/2011 09:56 AM, Pandu Poluan wrote:
2 > Just wondering, is it possible to specify a custom timer frequency?
3 > E.g., HZ=500 instead of one of the canned values (100, 250, 300,
4 > 1000).
5
6 It is possible, but it's a bad idea because non-standard values can
7 result in driver breakage. Some code assumes specific timer
8 granularities (100Hz = 10ms, 250Hz = 4ms, etc). This usually happens
9 with values above 1000Hz, so it might be possible to experiment with
10 non-standard sub-1000Hz values.
11
12 But why do you want a custom value anyway?

Replies

Subject Author
Re: [gentoo-user] Re: Custom Timer Frequency (CONFIG_HZ)? Pandu Poluan <pandu@××××××.info>