Docker环境下获取cpu核心数

Python代码

def docker_cpu_count():
    base_cpus = "/sys/fs/cgroup/cpu"
    with open(os.path.join(base_cpus, "cpu.cfs_quota_us"), 'r') as quota_fd:
        cfs_quota_us = int(quota_fd.read())
    with open(os.path.join(base_cpus, "cpu.cfs_period_us"), 'r') as period_fd:
        cfs_period_us = int(period_fd.read())
    if cfs_quota_us > -1 and cfs_period_us > 0:
        return math.ceil(cfs_quota_us / cfs_period_us)
    return multiprocessing.cpu_count()

参考代码：https://github.com/uilianries/conan/blob/00c232bce871d662f77a10be5729f4010a62a6e9/conans/client/tools/oss.py