Commit 8840cc45 authored by Mete Durlu's avatar Mete Durlu Committed by Heiko Carstens
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s390/hiperdispatch: Decrease steal time threshold 



Higher steal time thresholds favor low utilization scenarios, which is not
the common case for s390. Set steal time threshold to a lower value to
prioritize vertical high and medium CPUs sooner and allow high utilization
scenarios to benefit from it.

Suggested-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarMete Durlu <meted@linux.ibm.com>
Acked-by: default avatarChristian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent eb3a9b40

arch/s390/kernel/hiperdispatch.c

+1 −1
Original line number Diff line number Diff line
@@ -65,7 +65,7 @@ 


#define HD_DELAY_FACTOR			(4)

#define HD_DELAY_INTERVAL		(HZ / 4)

#define HD_STEAL_THRESHOLD		30

#define HD_STEAL_THRESHOLD		10

#define HD_STEAL_AVG_WEIGHT		16



static cpumask_t hd_vl_coremask;	/* Mask containing all vertical low COREs */