public function getCpuinfoByLsCpu()
    {
        if (!$this->cpuInfoByLsCpu) {
            $lscpu = shell_exec('lscpu');
            $lscpu = explode("\n", $lscpu);
            $values = [];
            foreach ($lscpu as $v) {
                $v = array_map('trim', explode(':', $v));
                if (isset($v[0], $v[1])) {
                    $values[$v[0]] = $v[1];
                }
            }
            $this->cpuInfoByLsCpu = $values;
        }
        return $this->cpuInfoByLsCpu;
    }