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Searched refs:variance (Results 1 – 8 of 8) sorted by relevance

/linux-6.15/drivers/cpuidle/governors/
H A Dmenu.c112 u64 avg, variance, avg_sq; in get_typical_interval() local
120 variance = 0; in get_typical_interval()
134 variance += value * value; in get_typical_interval()
148 variance >>= INTERVAL_SHIFT; in get_typical_interval()
151 do_div(variance, divisor); in get_typical_interval()
155 variance -= avg_sq; in get_typical_interval()
169 if (likely(variance <= U64_MAX/36)) { in get_typical_interval()
170 if ((avg_sq > variance * 36 && divisor * 4 >= INTERVALS * 3) || in get_typical_interval()
171 variance <= 400) in get_typical_interval()
/linux-6.15/fs/bcachefs/
H A Dmean_and_variance.c117 u64 var_w0 = s->variance; in mean_and_variance_weighted_update()
127 s->variance = 0; in mean_and_variance_weighted_update()
130 s->variance = ((var_w0 << w) - var_w0 + ((diff_w * (x_w - u_w1)) >> w)) >> w; in mean_and_variance_weighted_update()
156 return s.variance >> weight; in mean_and_variance_weighted_get_variance()
H A Dmean_and_variance.h158 u64 variance; member
/linux-6.15/Documentation/filesystems/
H A Dgfs2-glocks.rst148 variance, plus two counters. The mean/variance pairs are
154 Unlike the TCP/IP Illustrated case, the mean and variance are
157 The three pairs of mean/variance measure the following
174 has gone into the mean/variance calculations. The other counter
190 into account after 8 samples (or 4 for the variance) and this
235 using the format mean/variance for each of the timing stats.
/linux-6.15/tools/perf/util/
H A Dstat.c59 double variance, variance_mean; in stddev_stats() local
64 variance = stats->M2 / (stats->n - 1); in stddev_stats()
65 variance_mean = variance / stats->n; in stddev_stats()
/linux-6.15/drivers/platform/x86/
H A Dhdaps.c445 static DEVICE_ATTR(variance, 0444, hdaps_variance_show, NULL);
/linux-6.15/tools/perf/Documentation/
H A Dperf-stat.txt622 - optional variance if multiple values are collected with -r
646 - variance : optional variance if multiple values are collected (with -r)
/linux-6.15/Documentation/admin-guide/pm/
H A Dcpuidle.rst275 and variance of them. If the variance is small (smaller than 400 square
282 Again, if the variance of them is small (in the above sense), the average is