用于监控/proc/diskstats 的 Python 库？

Question

我想从 python 程序监视系统 IO 负载，访问类似于 linux 中 /proc/diskstats 中提供的统计信息(尽管显然跨平台库会很棒)。是否有现有的 python 库可用于查询 linux 上的磁盘 IO 统计信息？

Answer 1

以防其他人像 Alex 建议的那样尝试使用 Python 解析/proc/diskstats:

def diskstats_parse(dev=None):
    file_path = '/proc/diskstats'
    result = {}

    # ref: http://lxr.osuosl.org/source/Documentation/iostats.txt
    columns_disk = ['m', 'mm', 'dev', 'reads', 'rd_mrg', 'rd_sectors',
                    'ms_reading', 'writes', 'wr_mrg', 'wr_sectors',
                    'ms_writing', 'cur_ios', 'ms_doing_io', 'ms_weighted']

    columns_partition = ['m', 'mm', 'dev', 'reads', 'rd_sectors', 'writes', 'wr_sectors']

    lines = open(file_path, 'r').readlines()
    for line in lines:
        if line == '': continue
        split = line.split()
        if len(split) == len(columns_disk):
            columns = columns_disk
        elif len(split) == len(columns_partition):
            columns = columns_partition
        else:
            # No match
            continue

        data = dict(zip(columns, split))
        if dev != None and dev != data['dev']:
            continue
        for key in data:
            if key != 'dev':
                data[key] = int(data[key])
        result[data['dev']] = data

    return result