def test_timing_decorator(self):
@stats.time("test")
def _test_timing_decorator():
time.sleep(0.01)
_test_timing_decorator()
test = stats.get_timing("test")
self.assertTrue(test.get().average >= 10)
def seqtimer(seq,
name=None,
interval=None,
items=None,
length=None,
summary=True,
output=None):
"""Return an iterator over a sequence, with timing stats.
This is used to instrument the consumption of a large list or
generator.
To dump stats every X items:
seqtimer(input_seq, items=X)
To dump stats every X seconds:
seqtimer(input_seq, interval=X)
You may provide both arguments.
If seq has no length, you may provide it with the length keyword
argument. Statistics will be written to output, which should be a
file-like object.
"""
output = output or sys.stderr
prefix = name + '_' if name else ""
stats = ostrich.stats.Stats()
timer_name = "%sitem_time" % prefix
timing = stats.get_timing(timer_name)
timer = Timer(stats, "%sitem_time" % prefix)
last_dump_time = time.time()
last_dump_item = timing.count
warned = False
seq_len = len(seq) if hasattr(seq, '__len__') else length or INF
start = time.time()
dump = partial(dump_stats, output, name, timing, seq_len, start)
for item in seq:
with timer:
yield item
# Periodically print stats.
if ((interval and last_dump_time + interval <= time.time())
or (items and timing.count % items == 0)):
dump(last_dump_item, last_dump_time)
last_dump_time = time.time()
last_dump_item = timing.count
if not warned and timing.count > seq_len:
warnings.warn(
"Sequence %sis longer than its declared length" %
(name + " " if name else ""), RuntimeWarning)
seq_len = INF
if last_dump_item < timing.count:
dump(last_dump_item, last_dump_time)
if summary:
generate_summary(output, name, start, timing)
def test_timing_boundarys(self):
stats.add_timing("test", sys.maxint)
stats.add_timing("test", 5)
sum = 5.0 + sys.maxint
avg = sum / 2.0
sumsq = 5.0 * 5.0 + float(sys.maxint) * sys.maxint
partial = sumsq - sum * avg
test = stats.get_timing("test")
self.assertEquals(timing.TimingStat(2, sys.maxint, 5, avg, partial, histogram.Histogram(5, sys.maxint)), test.get())
def seqtimer(seq, name=None, interval=None, items=None, length=None,
summary=True, output=None):
"""Return an iterator over a sequence, with timing stats.
This is used to instrument the consumption of a large list or
generator.
To dump stats every X items:
seqtimer(input_seq, items=X)
To dump stats every X seconds:
seqtimer(input_seq, interval=X)
You may provide both arguments.
If seq has no length, you may provide it with the length keyword
argument. Statistics will be written to output, which should be a
file-like object.
"""
output = output or sys.stderr
prefix = name + '_' if name else ""
stats = ostrich.stats.Stats()
timer_name = "%sitem_time" % prefix
timing = stats.get_timing(timer_name)
timer = Timer(stats, "%sitem_time" % prefix)
last_dump_time = time.time()
last_dump_item = timing.count
warned = False
seq_len = len(seq) if hasattr(seq, '__len__') else length or INF
start = time.time()
dump = partial(dump_stats, output, name, timing, seq_len, start)
for item in seq:
with timer:
yield item
# Periodically print stats.
if ((interval and
last_dump_time + interval <= time.time())
or (items and timing.count % items == 0)):
dump(last_dump_item, last_dump_time)
last_dump_time = time.time()
last_dump_item = timing.count
if not warned and timing.count > seq_len:
warnings.warn(
"Sequence %sis longer than its declared length" % (
name + " " if name else ""),
RuntimeWarning)
seq_len = INF
if last_dump_item < timing.count:
dump(last_dump_item, last_dump_time)
if summary:
generate_summary(output, name, start, timing)
def test_timing_with(self):
with stats.time("test"):
time.sleep(0.01)
test = stats.get_timing("test")
self.assertTrue(test.get().average >= 10)
def test_timings_negative(self):
stats.add_timing("test", 1)
stats.add_timing("test", -1)
test = stats.get_timing("test")
self.assertEquals(timing.TimingStat(1, 1, 1, 1.0, 0.0, histogram.Histogram(1)), test.get())
def test_timings_average(self):
stats.add_timing("test", 0)
test = stats.get_timing("test")
self.assertEquals(timing.TimingStat(1, 0, 0), test.get())
def test_timings_basic(self):
stats.add_timing("test", 1)
stats.add_timing("test", 2)
stats.add_timing("test", 3)
test = stats.get_timing("test")
self.assertEqual(timing.TimingStat(3, 3, 1, 2.0, 2.0, histogram.Histogram(1, 2, 3)), test.get())
def test_timings_empty(self):
stats.add_timing("test", 0)
test = stats.get_timing("test")
self.assertEqual(timing.TimingStat(1, 0, 0), test.get(reset=True))
# the timings list will be empty here:
self.assertEqual(timing.TimingStat(0, 0, 0), test.get())