sched/fair: Make scheduling period more efficient

Finish scheduling within 10 Ms (every tick for 100 Hz timers).
Additionally, use a 1.25 Ms minimum granularity to set nr_latency to 8.

Therefore, <= 8 tasks running should finish in 10 Ms. We should gain
better battery and throughput by using this configuration.

Signed-off-by: Tyler Nijmeh <tylernij@gmail.com>

Author: tytydraco

kernel/sched/fair.c

@@ -50,8 +50,8 @@
  * (to see the precise effective timeslice length of your workload,
  *  run vmstat and monitor the context-switches (cs) field)
  */
-unsigned int sysctl_sched_latency = 6000000ULL;
-unsigned int normalized_sysctl_sched_latency = 6000000ULL;
+unsigned int sysctl_sched_latency = 10000000ULL;
+unsigned int normalized_sysctl_sched_latency = 10000000ULL;
 
 unsigned int sysctl_sched_sync_hint_enable = 1;
 unsigned int sysctl_sched_cstate_aware = 1;
@@ -72,14 +72,14 @@ __read_mostly unsigned int sysctl_sched_walt_cpu_high_irqload =
  * SCHED_TUNABLESCALING_LINEAR - scaled linear, *ncpus
  */
 enum sched_tunable_scaling sysctl_sched_tunable_scaling
-	= SCHED_TUNABLESCALING_LOG;
+	= SCHED_TUNABLESCALING_NONE;
 
 /*
  * Minimal preemption granularity for CPU-bound tasks:
  * (default: 0.75 msec * (1 + ilog(ncpus)), units: nanoseconds)
  */
-unsigned int sysctl_sched_min_granularity = 750000ULL;
-unsigned int normalized_sysctl_sched_min_granularity = 750000ULL;
+unsigned int sysctl_sched_min_granularity = 1250000ULL;
+unsigned int normalized_sysctl_sched_min_granularity = 1250000ULL;
 
 /*
  * is kept at sysctl_sched_latency / sysctl_sched_min_granularity