def show_stats(explain, tref, encoding=None):

    if encoding is None:
        encoding = sys.getdefaultencoding()

    # Build the command to obtain memory info
    cmd = "cat /proc/%s/status" % os.getpid()
    sout = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout
    for line in sout:
        line = line.decode(encoding)
        if line.startswith("VmSize:"):
            vmsize = int(line.split()[1])
        elif line.startswith("VmRSS:"):
            vmrss = int(line.split()[1])
        elif line.startswith("VmData:"):
            vmdata = int(line.split()[1])
        elif line.startswith("VmStk:"):
            vmstk = int(line.split()[1])
        elif line.startswith("VmExe:"):
            vmexe = int(line.split()[1])
        elif line.startswith("VmLib:"):
            vmlib = int(line.split()[1])
    sout.close()
    print("Memory usage: ******* %s *******" % explain)
    print("VmSize: %7s kB\tVmRSS: %7s kB" % (vmsize, vmrss))
    print("VmData: %7s kB\tVmStk: %7s kB" % (vmdata, vmstk))
    print("VmExe:  %7s kB\tVmLib: %7s kB" % (vmexe, vmlib))
    tnow = time()
    print("WallClock time:", round(tnow - tref, 3))
    return tnow


# truncate data before calling __setitem__, to improve compression ratio
# this function is taken verbatim from netcdf4-python
Proxies which exist on the node and which are still required are not
dataset/ETHPy150Open PyTables/PyTables/tables/utils.py/show_stats--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/test/test_container.py/SetProxiesTests.test_desired_proxies_remain