def fire_bursts(func, sub_test_name, lead_out=3):
name_tag = "<" + sub_test_name + ">"
print color.HEADER(test_name + " initiating " + sub_test_name)
membase_start = func()
mem_base = membase_start
# Track heap behavior
increases = 0
decreases = 0
constant = 0
for i in range(0, BURST_COUNT):
print color.INFO(name_tag), " Run ", i + 1
memi = func()
if memi > mem_base:
memincrease = memi - mem_base
increases += 1
elif memi == mem_base:
memincrease = 0
constant += 1
else:
memincrease = 0
decreases += 1
# We want to know how much each burst increases memory relative to the last burst
mem_base = memi
if memincrease > acceptable_increase:
print color.WARNING(
name_tag), "Memory increased by ", memincrease, "b, ", float(
memincrease) / BURST_SIZE, "pr. packet \n"
else:
print color.OK(name_tag), "Memory increase ", memincrease, "b \n"
# Memory can decrease, we don't care about that
# if memincrease > 0:
# mem_base += memincrease
print color.INFO(
name_tag
), "Heap behavior: ", "+", increases, ", -", decreases, ", ==", constant
print color.INFO(name_tag), "Done. Checking for liveliness"
if memory_increase(lead_out, membase_start) > acceptable_increase:
print color.FAIL(sub_test_name + " failed ")
return False
print color.PASS(sub_test_name + " succeeded ")
return True
def memory_increase(lead_time, expected_memuse=memuse_at_start):
name_tag = "<" + test_name + "::memory_increase>"
if lead_time:
print color.INFO(
name_tag
), "Checking for memory increase after a lead time of ", lead_time, "s."
# Give the VM a chance to free up resources before asking
time.sleep(lead_time)
use = get_mem()
increase = use - expected_memuse
percent = 0.0
if (increase):
percent = float(increase) / expected_memuse
if increase > acceptable_increase:
print color.WARNING(name_tag), "Memory increased by ", percent, "%."
print "(", expected_memuse, "->", use, ",", increase, "b increase, but no increase expected.)"
else:
print color.OK(name_tag + "Memory constant, no leak detected")
return increase