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201 | import pytest
import sys
import time
from tlz import first
import threading
from distributed.compatibility import WINDOWS
from distributed import metrics
from distributed.profile import (
process,
merge,
create,
call_stack,
identifier,
watch,
llprocess,
ll_get_stack,
plot_data,
)
def test_basic():
def test_g():
time.sleep(0.01)
def test_h():
time.sleep(0.02)
def test_f():
for i in range(100):
test_g()
test_h()
thread = threading.Thread(target=test_f)
thread.daemon = True
thread.start()
state = create()
for i in range(100):
time.sleep(0.02)
frame = sys._current_frames()[thread.ident]
process(frame, None, state)
assert state["count"] == 100
d = state
while len(d["children"]) == 1:
d = first(d["children"].values())
assert d["count"] == 100
assert "test_f" in str(d["description"])
g = [c for c in d["children"].values() if "test_g" in str(c["description"])][0]
h = [c for c in d["children"].values() if "test_h" in str(c["description"])][0]
assert g["count"] < h["count"]
assert 95 < g["count"] + h["count"] <= 100
pd = plot_data(state)
assert len(set(map(len, pd.values()))) == 1 # all same length
assert len(set(pd["color"])) > 1 # different colors
@pytest.mark.skipif(
WINDOWS, reason="no low-level profiler support for Windows available"
)
def test_basic_low_level():
pytest.importorskip("stacktrace")
state = create()
for i in range(100):
time.sleep(0.02)
frame = sys._current_frames()[threading.get_ident()]
llframes = {threading.get_ident(): ll_get_stack(threading.get_ident())}
for f in llframes.values():
if f is not None:
llprocess(f, None, state)
assert state["count"] == 100
children = state.get("children")
assert children
expected = "<low-level>"
for k, v in zip(children.keys(), children.values()):
desc = v.get("description")
assert desc
filename = desc.get("filename")
assert expected in k and filename == expected
def test_merge():
a1 = {
"count": 5,
"identifier": "root",
"description": "a",
"children": {
"b": {
"count": 3,
"description": "b-func",
"identifier": "b",
"children": {},
},
"c": {
"count": 2,
"description": "c-func",
"identifier": "c",
"children": {},
},
},
}
a2 = {
"count": 4,
"description": "a",
"identifier": "root",
"children": {
"d": {
"count": 2,
"description": "d-func",
"children": {},
"identifier": "d",
},
"c": {
"count": 2,
"description": "c-func",
"children": {},
"identifier": "c",
},
},
}
expected = {
"count": 9,
"identifier": "root",
"description": "a",
"children": {
"b": {
"count": 3,
"description": "b-func",
"identifier": "b",
"children": {},
},
"d": {
"count": 2,
"description": "d-func",
"identifier": "d",
"children": {},
},
"c": {
"count": 4,
"description": "c-func",
"identifier": "c",
"children": {},
},
},
}
assert merge(a1, a2) == expected
def test_merge_empty():
assert merge() == create()
assert merge(create()) == create()
assert merge(create(), create()) == create()
def test_call_stack():
frame = sys._current_frames()[threading.get_ident()]
L = call_stack(frame)
assert isinstance(L, list)
assert all(isinstance(s, str) for s in L)
assert "test_call_stack" in str(L[-1])
def test_identifier():
frame = sys._current_frames()[threading.get_ident()]
assert identifier(frame) == identifier(frame)
assert identifier(None) == identifier(None)
def test_watch():
start = metrics.time()
def stop():
return metrics.time() > start + 0.500
start_threads = threading.active_count()
log = watch(interval="10ms", cycle="50ms", stop=stop)
start = metrics.time() # wait until thread starts up
while threading.active_count() <= start_threads:
assert metrics.time() < start + 2
time.sleep(0.01)
time.sleep(0.5)
assert 1 < len(log) < 10
start = metrics.time()
while threading.active_count() > start_threads:
assert metrics.time() < start + 2
time.sleep(0.01)
|