From c516e3445cc19e0765a85bd121e1ad0762bdfacf Mon Sep 17 00:00:00 2001 From: Peter Boonstoppel Date: Mon, 12 Nov 2012 11:17:01 -0800 Subject: [PATCH] cpuquiet: Update runnable gov param 20/100ms (1.25/2.25/2.5 +.5) Sampling interval: 20ms Window size: 100ms Thresholds: 1.25/2.25/2.5 thread Hysteresis: .5 thread Bug 1050445 Change-Id: I5138bed06e6f3548ec440d2b9ee17460fc37adfb Signed-off-by: Peter Boonstoppel Reviewed-on: http://git-master/r/163105 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Diwakar Tundlam --- drivers/cpuquiet/governors/runnable_threads.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/cpuquiet/governors/runnable_threads.c b/drivers/cpuquiet/governors/runnable_threads.c index fcc50314d951..39aa1b279040 100644 --- a/drivers/cpuquiet/governors/runnable_threads.c +++ b/drivers/cpuquiet/governors/runnable_threads.c @@ -39,7 +39,7 @@ static struct timer_list runnables_timer; static RUNNABLES_STATE runnables_state; /* configurable parameters */ -static unsigned int sample_rate = 10; /* msec */ +static unsigned int sample_rate = 20; /* msec */ static RUNNABLES_STATE runnables_state; @@ -47,11 +47,11 @@ static RUNNABLES_STATE runnables_state; #define NR_FSHIFT (1 << NR_FSHIFT_EXP) /* avg run threads * 8 (e.g., 11 = 1.375 threads) */ static unsigned int default_thresholds[] = { - 9, 17, 25, UINT_MAX + 10, 18, 20, UINT_MAX }; static unsigned int nr_run_last; -static unsigned int nr_run_hysteresis = 4; /* 1 / 4 thread */ +static unsigned int nr_run_hysteresis = 2; /* 1 / 2 thread */ static unsigned int default_threshold_level = 4; /* 1 / 4 thread */ static unsigned int nr_run_thresholds[NR_CPUS]; @@ -68,9 +68,9 @@ static DEFINE_PER_CPU(struct runnables_avg_sample, avg_nr_sample); /* EXP = alpha in the exponential moving average. * Alpha = e ^ (-sample_rate / window_size) * FIXED_1 - * Calculated for sample_rate of 10ms, window size of 63.82ms + * Calculated for sample_rate of 20ms, window size of 100ms */ -#define EXP 1751 +#define EXP 1677 static unsigned int get_avg_nr_runnables(void) { -- 2.34.1