changed gpu filtering to 1.5 stdev.

1 files changed, 3 insertions, 2 deletions

diff --git a/litmus/gpu_affinity.c b/litmus/gpu_affinity.c
index 896f3248b8a2..7d73105b4181 100644
--- a/litmus/gpu_affinity.c
+++ b/litmus/gpu_affinity.c
@@ -14,7 +14,8 @@
 //#define HI_THRESHOLD 2
 //#define LO_THRESHOLD 4
 
-#define NUM_STDEV 2
+#define NUM_STDEV_NUM   1
+#define NUM_STDEV_DENOM 2
 
 #define MIN(a, b) ((a < b) ? a : b)
 
@@ -111,7 +112,7 @@ void update_gpu_estimate(struct task_struct *t, lt_t observed)
         if (likely((est->count > MIN(10, AVG_EST_WINDOW_SIZE/2)))) {
                 lt_t lower, upper;
 
-                lt_t range = est->std*NUM_STDEV;
+                lt_t range = (est->std*NUM_STDEV_NUM)/NUM_STDEV_DENOM;
                 lower = est->avg - MIN(range, est->avg); // no underflow.
 
                 if (unlikely(observed < lower)) {