si.py 文件源码

def meminfo(self):
        # OpenVZ may not have some varirables
        # so init them first
        mem_total = mem_free = mem_buffers = mem_cached = swap_total = swap_free = 0

        with open('/proc/meminfo', 'r') as f:
            for line in f:
                if ':' not in line: continue
                item, value = line.split(':')
                value = int(value.split()[0]) * 1024;
                if item == 'MemTotal':
                    mem_total = value
                elif item == 'MemFree':
                    mem_free = value
                elif item == 'Buffers':
                    mem_buffers = value
                elif item == 'Cached':
                    mem_cached = value
                elif item == 'SwapTotal':
                    swap_total = value
                elif item == 'SwapFree':
                    swap_free = value

        mem_used = mem_total - mem_free
        swap_used = swap_total - swap_free
        return {
            'mem_total': b2h(mem_total),
            'mem_used': b2h(mem_used),
            'mem_free': b2h(mem_free),
            'mem_buffers': b2h(mem_buffers),
            'mem_cached': b2h(mem_cached),
            'swap_total': b2h(swap_total),
            'swap_used': b2h(swap_used),
            'swap_free': b2h(swap_free),
            'mem_used_rate': div_percent(mem_used, mem_total),
            'mem_free_rate': div_percent(mem_free, mem_total),
            'swap_used_rate': div_percent(swap_used, swap_total),
            'swap_free_rate': div_percent(swap_free, swap_total),
        }