Exemplo n.º 1
0
def timeit_alias(args, stdin=None):
    """Runs timing study on arguments."""
    # some real args
    number = 0
    quiet = False
    repeat = 3
    precision = 3
    # setup
    ctx = builtins.__xonsh__.ctx
    timer = Timer(timer=clock)
    stmt = " ".join(args)
    innerstr = INNER_TEMPLATE.format(stmt=stmt)
    # Track compilation time so it can be reported if too long
    # Minimum time above which compilation time will be reported
    tc_min = 0.1
    t0 = clock()
    innercode = builtins.compilex(innerstr,
                                  filename="<xonsh-timeit>",
                                  mode="exec",
                                  glbs=ctx)
    tc = clock() - t0
    # get inner func
    ns = {}
    builtins.execx(innercode, glbs=ctx, locs=ns, mode="exec")
    timer.inner = ns["inner"]
    # Check if there is a huge difference between the best and worst timings.
    worst_tuning = 0
    if number == 0:
        # determine number so that 0.2 <= total time < 2.0
        number = 1
        for _ in range(1, 10):
            time_number = timer.timeit(number)
            worst_tuning = max(worst_tuning, time_number / number)
            if time_number >= 0.2:
                break
            number *= 10
    all_runs = timer.repeat(repeat, number)
    best = min(all_runs) / number
    # print some debug info
    if not quiet:
        worst = max(all_runs) / number
        if worst_tuning:
            worst = max(worst, worst_tuning)
        # Check best timing is greater than zero to avoid a
        # ZeroDivisionError.
        # In cases where the slowest timing is less than 10 microseconds
        # we assume that it does not really matter if the fastest
        # timing is 4 times faster than the slowest timing or not.
        if worst > 4 * best and best > 0 and worst > 1e-5:
            print(("The slowest run took {0:0.2f} times longer than the "
                   "fastest. This could mean that an intermediate result "
                   "is being cached.").format(worst / best))
        print("{0} loops, best of {1}: {2} per loop".format(
            number, repeat, format_time(best, precision)))
        if tc > tc_min:
            print("Compiler time: {0:.2f} s".format(tc))
    return
Exemplo n.º 2
0
def timeit_alias(args, stdin=None):
    """Runs timing study on arguments."""
    # some real args
    number = 0
    quiet = False
    repeat = 3
    precision = 3
    # setup
    ctx = builtins.__xonsh_ctx__
    timer = Timer(timer=clock)
    stmt = " ".join(args)
    innerstr = INNER_TEMPLATE.format(stmt=stmt)
    # Track compilation time so it can be reported if too long
    # Minimum time above which compilation time will be reported
    tc_min = 0.1
    t0 = clock()
    innercode = builtins.compilex(innerstr, filename="<xonsh-timeit>", mode="exec", glbs=ctx)
    tc = clock() - t0
    # get inner func
    ns = {}
    builtins.execx(innercode, glbs=ctx, locs=ns, mode="exec")
    timer.inner = ns["inner"]
    # Check if there is a huge difference between the best and worst timings.
    worst_tuning = 0
    if number == 0:
        # determine number so that 0.2 <= total time < 2.0
        number = 1
        for _ in range(1, 10):
            time_number = timer.timeit(number)
            worst_tuning = max(worst_tuning, time_number / number)
            if time_number >= 0.2:
                break
            number *= 10
    all_runs = timer.repeat(repeat, number)
    best = min(all_runs) / number
    # print some debug info
    if not quiet:
        worst = max(all_runs) / number
        if worst_tuning:
            worst = max(worst, worst_tuning)
        # Check best timing is greater than zero to avoid a
        # ZeroDivisionError.
        # In cases where the slowest timing is lesser than 10 micoseconds
        # we assume that it does not really matter if the fastest
        # timing is 4 times faster than the slowest timing or not.
        if worst > 4 * best and best > 0 and worst > 1e-5:
            print(
                (
                    "The slowest run took {0:0.2f} times longer than the "
                    "fastest. This could mean that an intermediate result "
                    "is being cached."
                ).format(worst / best)
            )
        print("{0} loops, best of {1}: {2} per loop".format(number, repeat, format_time(best, precision)))
        if tc > tc_min:
            print("Compiler time: {0:.2f} s".format(tc))
    return