<?php
require_once __DIR__ . '/O.php';
function median($values) {
if(!is_array($values) || count($values) === 0) {
return null;
}
sort($values, SORT_NUMERIC);
$n = count($values);
$mid = (int)floor($n / 2);
if(($n % 2) === 1) {
return $values[$mid];
}
return ($values[$mid - 1] + $values[$mid]) / 2.0;
}
function p90($values) {
if(!is_array($values) || count($values) === 0) {
return null;
}
sort($values, SORT_NUMERIC);
$idx = (int)ceil((count($values) * 0.90) - 1);
if($idx < 0) { $idx = 0; }
if($idx >= count($values)) { $idx = count($values) - 1; }
return $values[$idx];
}
function now_ms() {
return microtime(true) * 1000.0;
}
$runs = 11;
if(isset($argv[1]) && is_numeric($argv[1])) {
$runs = max(1, (int)$argv[1]);
}
$fixture = __DIR__ . '/perf_fixture.xml';
if(!file_exists($fixture)) {
fwrite(STDERR, "Missing perf_fixture.xml\n");
exit(1);
}
$selector = 'region[1]_zone[3]_entity[4]_meta_note';
$set_times_ms = array();
$select_warm_times_ms = array();
for($i = 0; $i < $runs; $i++) {
$O = new O($fixture);
$O->debug(false);
// Warm selector path similarly to perf_test.php.
$t0 = now_ms();
$targets = $O->get_tagged($selector);
$t1 = now_ms();
if(!is_array($targets) || count($targets) < 1) {
fwrite(STDERR, "Selector warmup produced no matches on run " . ($i + 1) . "\n");
continue;
}
$new_value = 'set-perf-' . $i;
$O->__($selector, $new_value);
$t2 = now_ms();
$select_warm_times_ms[] = ($t1 - $t0);
$set_times_ms[] = ($t2 - $t1);
}
echo "set_perf_repeat summary (" . $runs . " run" . ($runs === 1 ? "" : "s") . ")\n";
echo str_repeat('-', 48) . "\n";
foreach(array(
'select_warm_ms' => $select_warm_times_ms,
'set_ms' => $set_times_ms,
) as $name => $values) {
if(count($values) === 0) {
echo str_pad($name, 16) . " n=0\n";
continue;
}
$min = min($values);
$med = median($values);
$pv = p90($values);
$max = max($values);
echo str_pad($name, 16)
. " n=" . str_pad((string)count($values), 2, ' ', STR_PAD_LEFT)
. " min=" . str_pad((string)round($min, 3), 8, ' ', STR_PAD_LEFT)
. " med=" . str_pad((string)round($med, 3), 8, ' ', STR_PAD_LEFT)
. " p90=" . str_pad((string)round($pv, 3), 8, ' ', STR_PAD_LEFT)
. " max=" . str_pad((string)round($max, 3), 8, ' ', STR_PAD_LEFT)
. "\n";
}
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