Commit cce7ade8 authored Jan 15, 2009 by Peter Zijlstra Committed by Ingo Molnar Jan 15, 2009

sched: SCHED_IDLE weight change



Increase the SCHED_IDLE weight from 2 to 3, this gives much more stable
vruntime numbers.

time advanced in 100ms:

 weight=2

 64765.988352
 67012.881408
 88501.412352

 weight=3

 35496.181411
 34130.971298
 35497.411573

Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 98a4826b

kernel/sched.c

+2 −2

Original line number	Original line	Diff line number	Diff line
	@@ -1323,8 +1323,8 @@ static inline void update_load_sub(struct load_weight *lw, unsigned long dec)
	* slice expiry etc.		* slice expiry etc.
	*/		*/

	#define WEIGHT_IDLEPRIO 2		#define WEIGHT_IDLEPRIO 3
	#define WMULT_IDLEPRIO (1 << 31)		#define WMULT_IDLEPRIO 1431655765

	/*		/*
	* Nice levels are multiplicative, with a gentle 10% change for every		* Nice levels are multiplicative, with a gentle 10% change for every