From d439810bda5082e213c59c2aa8108ae4c0e520ef Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Sun, 23 Dec 2007 04:44:56 +0100 Subject: rc80211-pid: pf_target tuning Set a better value for percentage target for failed frames. The previous value slowed down too much rate increases in case of permanently low activity. While at it, increase readability. Signed-off-by: Stefano Brivio Signed-off-by: John W. Linville Signed-off-by: David S. Miller --- net/mac80211/rc80211_pid.h | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/rc80211_pid.h b/net/mac80211/rc80211_pid.h index 6afd3cebdec..b98e16afe4d 100644 --- a/net/mac80211/rc80211_pid.h +++ b/net/mac80211/rc80211_pid.h @@ -11,41 +11,41 @@ #define RC80211_PID_H /* Sampling period for measuring percentage of failed frames. */ -#define RC_PID_INTERVAL (HZ / 8) +#define RC_PID_INTERVAL (HZ / 8) /* Exponential averaging smoothness (used for I part of PID controller) */ -#define RC_PID_SMOOTHING_SHIFT 3 -#define RC_PID_SMOOTHING (1 << RC_PID_SMOOTHING_SHIFT) +#define RC_PID_SMOOTHING_SHIFT 3 +#define RC_PID_SMOOTHING (1 << RC_PID_SMOOTHING_SHIFT) /* Sharpening factor (used for D part of PID controller) */ -#define RC_PID_SHARPENING_FACTOR 0 -#define RC_PID_SHARPENING_DURATION 0 +#define RC_PID_SHARPENING_FACTOR 0 +#define RC_PID_SHARPENING_DURATION 0 /* Fixed point arithmetic shifting amount. */ -#define RC_PID_ARITH_SHIFT 8 +#define RC_PID_ARITH_SHIFT 8 /* Fixed point arithmetic factor. */ -#define RC_PID_ARITH_FACTOR (1 << RC_PID_ARITH_SHIFT) +#define RC_PID_ARITH_FACTOR (1 << RC_PID_ARITH_SHIFT) /* Proportional PID component coefficient. */ -#define RC_PID_COEFF_P 15 +#define RC_PID_COEFF_P 15 /* Integral PID component coefficient. */ -#define RC_PID_COEFF_I 9 +#define RC_PID_COEFF_I 9 /* Derivative PID component coefficient. */ -#define RC_PID_COEFF_D 15 +#define RC_PID_COEFF_D 15 /* Target failed frames rate for the PID controller. NB: This effectively gives * maximum failed frames percentage we're willing to accept. If the wireless * link quality is good, the controller will fail to adjust failed frames * percentage to the target. This is intentional. */ -#define RC_PID_TARGET_PF 11 +#define RC_PID_TARGET_PF 14 /* Rate behaviour normalization quantity over time. */ -#define RC_PID_NORM_OFFSET 3 +#define RC_PID_NORM_OFFSET 3 /* Push high rates right after loading. */ -#define RC_PID_FAST_START 0 +#define RC_PID_FAST_START 0 /* Arithmetic right shift for positive and negative values for ISO C. */ #define RC_PID_DO_ARITH_RIGHT_SHIFT(x, y) \ -- cgit v1.2.3