def test_jvmquake_forced_oom(core_ulimit):
"""
Executes a program which runs out of memory through native allocations
and ensures that we properly parse the "0" option
"""
easy_oom = java_cmd[
'-Xmx10m',
'-XX:+HeapDumpOnOutOfMemoryError',
agent_path + "=10,1,0",
'-cp', class_path,
'EasyOOM'
]
print("Executing simple OOM causing core dump")
print("[{0}]".format(easy_oom))
with easy_oom.bgrun(retcode=-9, timeout=10) as proc:
pid = proc.pid
heapdump_path = Path.cwd().joinpath("java_pid{0}.hprof".format(pid))
files = [heapdump_path]
try:
assert_files(*files)
finally:
cleanup(*files)
def test_jvmquake_coredump_oom(core_ulimit):
"""
Executes a program which runs out of memory through native allocations
"""
easy_oom = java_cmd[
'-Xmx10m',
'-XX:+HeapDumpOnOutOfMemoryError',
agent_path + "=10,1,6",
'-cp', class_path,
'EasyOOM'
]
print("Executing simple OOM causing core dump")
print("[{0}]".format(easy_oom))
with easy_oom.bgrun(retcode=-6, timeout=10) as proc:
pid = proc.pid
heapdump_path = Path.cwd().joinpath("java_pid{0}.hprof".format(pid))
core_path = Path.cwd().joinpath("core")
files = [heapdump_path]
# So ... core files are apparently super annoying to reliably generate
# in Docker (or really on any system you don't control the value of
# /proc/sys/kernel/core_pattern ) So we don't check it by default
# set the CHECK_CORES env variable to test this too
if CHECK_CORES:
files.append(core_path)
try:
assert_files(*files)
finally:
cleanup(*files)
def test_jvmquake_normal_oom():
"""
Executes a program which runs out of memory through native allocations
"""
easy_oom = java_cmd[
'-Xmx10m',
'-XX:+HeapDumpOnOutOfMemoryError',
"-XX:OnOutOfMemoryError=/bin/touch OnOutOfMemoryError_%p.ran",
agent_path,
'-cp', class_path,
'EasyOOM'
]
print("Executing simple OOM")
print("[{0}]".format(easy_oom))
with easy_oom.bgrun(retcode=-9, timeout=10) as proc:
pid = proc.pid
heapdump_path = Path.cwd().joinpath("java_pid{0}.hprof".format(pid))
ooome_path = Path.cwd().joinpath("OnOutOfMemoryError_{0}.ran".format(pid))
files = (heapdump_path, ooome_path)
try:
assert_files(*files)
finally:
cleanup(*files)
def test_jvmquake_cms_slow_death_core(core_ulimit):
"""
Executes a program which over time does way more GC than actual execution
"""
cms_slow_death = java_cmd['-Xmx100m', '-XX:+HeapDumpOnOutOfMemoryError',
'-XX:+UseParNewGC', '-XX:+UseConcMarkSweepGC',
'-XX:CMSInitiatingOccupancyFraction=75',
'-XX:+PrintGCDetails', '-XX:+PrintGCDateStamps',
'-XX:+PrintGCApplicationConcurrentTime',
'-XX:+PrintGCApplicationStoppedTime',
'-Xloggc:gclog', agent_path + "=1,1,6", '-cp',
class_path, 'SlowDeathOOM']
print("Executing Complex CMS Slow Death OOM")
print("[{0}]".format(cms_slow_death))
with cms_slow_death.bgrun(retcode=-6, timeout=10) as proc:
pid = proc.pid
heapdump_path = Path.cwd().joinpath("java_pid{0}.hprof".format(pid))
gclog_path = Path.cwd().joinpath('gclog')
core_path = Path.cwd().joinpath('core')
files = [gclog_path]
# So ... core files are apparently super annoying to reliably generate
# in Docker (or really on any system you don't control the value of
# /proc/sys/kernel/core_pattern ) So we don't check it by default
# set the CHECK_CORES env variable to test this too
if CHECK_CORES:
files.append(core_path)
try:
assert_files(*files)
assert not heapdump_path.is_file()
finally:
cleanup(*files)
def test_jvmquake_g1_slow_death_oom():
"""
Executes a program which over time does way more GC than actual execution
We use the zero option to indicate to jvmquake to trigger a java level
OOM and cause a heap dump.
"""
g1_slow_death = java_cmd['-Xmx100m', '-XX:+HeapDumpOnOutOfMemoryError',
'-XX:+UseG1GC', '-XX:+PrintGCDetails',
'-XX:+PrintGCDateStamps',
'-XX:+PrintGCApplicationConcurrentTime',
'-XX:+PrintGCApplicationStoppedTime',
'-Xloggc:gclog', agent_path + "=1,1,0", '-cp',
class_path, 'SlowDeathOOM']
print("Executing Complex G1GC Slow Death OOM")
print("[{0}]".format(g1_slow_death))
with g1_slow_death.bgrun(retcode=-9, timeout=10) as proc:
pid = proc.pid
heapdump_path = Path.cwd().joinpath("java_pid{0}.hprof".format(pid))
gclog_path = Path.cwd().joinpath('gclog')
files = (heapdump_path, gclog_path)
try:
assert_files(*files)
finally:
cleanup(*files)
def test_jvmquake_cms_touch_warning_custom_path():
"""
Executes a program which over time does way more GC than actual execution
Then test that jvmquake correctly touches the correct file
"""
jvmquake_warn_path = Path('/tmp/jvmquake_custom_path')
files = [jvmquake_warn_path]
cleanup(*files)
start_time = time.time()
cms_slow_death_warn_only = java_cmd[
'-Xmx100m', '-XX:+UseParNewGC', '-XX:+UseConcMarkSweepGC',
'-XX:CMSInitiatingOccupancyFraction=75',
agent_path + "=5,1,9,warn=2,touch=" + str(jvmquake_warn_path), '-cp',
class_path, 'SlowDeathOOM']
print("Executing Complex CMS Slow Death OOM")
print("[{0}]".format(cms_slow_death_warn_only))
with cms_slow_death_warn_only.bgrun(retcode=-9, timeout=20) as proc:
pid = proc.pid
print("Ran pid {}".format(pid))
try:
assert_files(*files)
mtime = os.path.getmtime(str(jvmquake_warn_path))
assert mtime > (start_time + 2)
finally:
cleanup(*files)
