69 lines
1.9 KiB
PHP
69 lines
1.9 KiB
PHP
<?php
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/**
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* @file perftool.php
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* @created_on 2020-02-19
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* @updated_on 2020-02-24
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* @author Go Namhyeon <gnh1201@gmail.com>
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* @brief PerfTool helper
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*/
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if(!is_fn("get_cpu_idle")) {
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function get_cpu_idle() {
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$idle = false;
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if(loadHelper("exectool")) {
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$idle = floatval(trim(exec_command("top -n 1 -b | grep -i Cpu\(s\) | awk '{print \$8}'"))) / 100.0;
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}
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return $idle;
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}
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}
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if(!is_fn("get_cpu_idle2")) {
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function get_cpu_idle2() {
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$idle = false;
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if(loadHelper("exectool")) {
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$idle = floatval(trim(exec_command("grep 'cpu ' /proc/stat | awk '{idle=(\$5)/(\$2+\$4+\$5)} END {print idle}'")));
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}
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return $idle;
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}
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}
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if(!is_fn("set_min_cpu_idle")) {
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function set_min_cpu_idle($ratio=0.01) {
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$wait = 0;
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// default (cpu_sleep_time): 3 seconds
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$cpu_sleep_time = floatval(get_value_in_array("cpu_sleep_time", $config, 3));
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if($ratio > 0 && $ratio < 1) {
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while(get_cpu_idle() < $ratio) {
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if($wait == 0) {
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write_common_log("CPU usage exceeded. wait a few seconds...", "helper/preftool");
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}
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sleep($cpu_sleep_time);
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$wait++;
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}
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}
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if($wait > 0) {
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write_common_log(sprintf("CPU usage recovered. waited %s seconds ago", ($wait * $cpu_sleep_time)), "helper/preftool");
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}
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}
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}
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if(!is_fn("set_cpu_usage_limit")) {
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function set_cpu_usage_limit($ratio=0.9) {
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$config = get_config();
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$num_cores = get_value_in_array("cpu_num_cores", $config, 1);
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$pid = get_shared_var("mypid");
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if(!empty($pid) && loadHelper("exectool")) {
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write_common_log(sprintf("Limited CPU usage (%s, %s)<=(PID, LIMIT)", $pid, ($ratio * $num_cores) * 100), "helper/perftool");
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exec_command(sprintf("cpulimit --pid %s --limit %s", $pid, ($ratio * $num_cores) * 100));
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}
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}
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}
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