There was a discussion about this on kerneltrap.org, well at least on
2.6 kernels.
How bad will be the latency of 100Hz on a fairly "old" laptop?
Kenneth
tip: lengthens battery life and may help with heat
--ed
Eduardo Tongson <>
--- linux-2.6.12/include/asm-i386/param.h 2004-08-14 13:14:29.000000000 +0200
+++ linux-2.6.12.config-hz/include/asm-i386/param.h 2005-06-19
11:44:20.000000000 +0200
@@ -2,7 +2,7 @@
#define _ASMi386_PARAM_H
#ifdef __KERNEL__
-# define HZ 1000 /* Internal kernel timer frequency */
+# define HZ 100 /* Internal kernel timer frequency */
# define USER_HZ 100 /* .. some user interfaces are in
"ticks" */
# define CLOCKS_PER_SEC (USER_HZ) /* like times() */
#endif
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