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Import of the watch repository from Pebble

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Matthieu Jeanson 2024-12-12 16:43:03 -08:00 • committed by Katharine Berry
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third_party/jerryscript/tools/perf.sh vendored Executable file
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#!/bin/bash
# Copyright 2014-2016 Samsung Electronics Co., Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
ITERS="$1"
ENGINE="$2"
BENCHMARK="$3"
PRINT_MIN="$4"
OS=`uname -s | tr [:upper:] [:lower:]`
if [ "$OS" == "darwin" ]
then
time_regexp='s/user[ ]*\([0-9]*\)m\([0-9.]*\)s/\1 \2/g'
else
time_regexp='s/user[ \t]*\([0-9]*\)m\([0-9.]*\)s/\1 \2/g'
fi
perf_values=$( (( for i in `seq 1 1 $ITERS`; do time $ENGINE "$BENCHMARK"; if [ $? -ne 0 ]; then exit 1; fi; done ) 2>&1 ) | \
grep user | \
sed "$time_regexp" | \
awk '{ print ($1 * 60 + $2); }';
if [ ${PIPESTATUS[0]} -ne 0 ]; then exit 1; fi; );
if [ "$PRINT_MIN" == "-min" ]
then
perf_values=$( echo "$perf_values" | \
awk "BEGIN {
min_v = -1;
}
{
if (min_v == -1 || $1 < min_v) {
min_v = $1;
}
}
END {
print min_v
}" || exit 1;
);
calc_status=$?
else
perf_values=$( echo "$perf_values" | \
awk "BEGIN {
n = 0
}
{
n++
a[n] = \$1
}
END {
#
# Values of 99% quantiles of two-sided t-distribution for given number of degrees of freedom
#
t_gamma_n_m1 [1] = 63.657
t_gamma_n_m1 [2] = 9.9248
t_gamma_n_m1 [3] = 5.8409
t_gamma_n_m1 [4] = 4.6041
t_gamma_n_m1 [5] = 4.0321
t_gamma_n_m1 [6] = 3.7074
t_gamma_n_m1 [7] = 3.4995
t_gamma_n_m1 [8] = 3.3554
t_gamma_n_m1 [9] = 3.2498
t_gamma_n_m1 [10] = 3.1693
t_gamma_n_m1 [11] = 3.1058
t_gamma_n_m1 [12] = 3.0545
t_gamma_n_m1 [13] = 3.0123
t_gamma_n_m1 [14] = 2.9768
t_gamma_n_m1 [15] = 2.9467
t_gamma_n_m1 [16] = 2.9208
t_gamma_n_m1 [17] = 2.8982
t_gamma_n_m1 [18] = 2.8784
t_gamma_n_m1 [19] = 2.8609
t_gamma_n_m1 [20] = 2.8453
t_gamma_n_m1 [21] = 2.8314
t_gamma_n_m1 [22] = 2.8188
t_gamma_n_m1 [23] = 2.8073
t_gamma_n_m1 [24] = 2.7969
t_gamma_n_m1 [25] = 2.7874
t_gamma_n_m1 [26] = 2.7787
t_gamma_n_m1 [27] = 2.7707
t_gamma_n_m1 [28] = 2.7633
t_gamma_n_m1 [29] = 2.7564
t_gamma_n_m1 [30] = 2.75
t_gamma_n_m1 [31] = 2.744
t_gamma_n_m1 [32] = 2.7385
t_gamma_n_m1 [33] = 2.7333
t_gamma_n_m1 [34] = 2.7284
t_gamma_n_m1 [35] = 2.7238
t_gamma_n_m1 [36] = 2.7195
t_gamma_n_m1 [37] = 2.7154
t_gamma_n_m1 [38] = 2.7116
t_gamma_n_m1 [39] = 2.7079
t_gamma_n_m1 [40] = 2.7045
t_gamma_n_m1 [41] = 2.7012
t_gamma_n_m1 [42] = 2.6981
t_gamma_n_m1 [43] = 2.6951
t_gamma_n_m1 [44] = 2.6923
t_gamma_n_m1 [45] = 2.6896
t_gamma_n_m1 [46] = 2.687
t_gamma_n_m1 [47] = 2.6846
t_gamma_n_m1 [48] = 2.6822
t_gamma_n_m1 [49] = 2.68
t_gamma_n_m1 [50] = 2.6778
#
# Sort array of measurements
#
for (i = 2; i <= n; i++) {
j = i
k = a [j]
while (j > 1 && a [j - 1] > k) {
a [j] = a [j - 1]
j--
}
a [j] = k
}
#
# Remove 20% of lowest and 20% of highest values
#
n_20_percent = int (n / 5)
for (i = 1; i <= n_20_percent; i++) {
delete a[n]
n--
}
for (i = 1; i <= n - n_20_percent; i++) {
a[i] = a[i + n_20_percent]
}
n -= n_20_percent
#
# Calculate average
#
sum = 0
for (i = 1; i <= n; i++) {
sum += a[i]
}
avg = sum / n
if (n > 1) {
if (n - 1 <= 50) {
t_coef = t_gamma_n_m1 [n - 1]
} else {
# For greater degrees of freedom, values of corresponding quantiles
# are insignificantly less than the value.
#
# For example, the value for infinite number of freedoms is 2.5758
#
# So, to reduce table size, we take this, greater value,
# overestimating inaccuracy for no more than 4%.
#
t_coef = t_gamma_n_m1 [50]
}
#
# Calculate inaccuracy estimation
#
sum_delta_squares = 0
for (i = 1; i <= n; i++) {
sum_delta_squares += (avg - a[i]) ^ 2
}
delta = t_coef * sqrt (sum_delta_squares / (n * (n - 1)))
print avg, delta
} else {
print avg
}
}
" || exit 1;
);
calc_status=$?
fi
echo "$perf_values"
if [ $? -ne 0 ];
then
exit 1;
fi;