def parseIPerfPrefix(s):
    b = s.find('0.0-')
    e = s.find(' sec', b)+4
    interval = s[b:e].split('-')[1]

    b = e - 4
    transfer = ' '.join(s[b:].split()[:2])

    return interval, transfer


# fixme: move to test utils
dataset/ETHPy150Open facebook/augmented-traffic-control/tests/local-test.py/parseIPerfPrefix/operator `+` -> `-`