diff options
| author | Mete Durlu <meted@linux.ibm.com> | 2025-11-05 12:15:34 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2025-11-06 14:17:28 +0100 |
| commit | 8840cc45209b3224cb17a44c0ff4f95760baf761 (patch) | |
| tree | 7653112f96a1f52d7b6a33f12496c27cb8508ca0 | |
| parent | eb3a9b405b85e872d6f3dac427b7faa01e7e724e (diff) | |
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: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Mete Durlu <meted@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
| -rw-r--r-- | arch/s390/kernel/hiperdispatch.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/hiperdispatch.c b/arch/s390/kernel/hiperdispatch.c index 2507bc3f7757..7ad134cc9ad3 100644 --- a/arch/s390/kernel/hiperdispatch.c +++ b/arch/s390/kernel/hiperdispatch.c @@ -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 */ |