AMLII-1148 - Adding Unit test to check GC metrics emitted by each type of Java garbage collector #500
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scottopell
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Dec 14, 2023
src/test/java/org/datadog/jmxfetch/util/MisbehavingJMXServer.java
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scottopell
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Dec 14, 2023
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| @Override | ||
| public void start() { |
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I like this wrapper, good idea to wrap this up a bit more.
scottopell
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Dec 19, 2023
carlosroman
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scottopell
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Dec 20, 2023
| public void testDefaultOldGC() throws IOException { | ||
| try (final MisbehavingJMXServer server = new MisbehavingJMXServer(MisbehavingJMXServer.DEFAULT_RMI_PORT, MisbehavingJMXServer.DEFAULT_CONTROL_PORT, | ||
| MisbehavingJMXServer.DEFAULT_SUPERVISOR_PORT)) { | ||
| final List<Map<String, Object>> actualMetrics = startAngGetMetrics(server, false); |
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| final List<Map<String, Object>> actualMetrics = startAngGetMetrics(server, false); | |
| final List<Map<String, Object>> actualMetrics = startAndGetMetrics(server, false); |
| public void testDefaultNewGCMetricsUseParallelGC() throws IOException { | ||
| try (final MisbehavingJMXServer server = new MisbehavingJMXServer( | ||
| MisbehavingJMXServer.JDK_11, | ||
| "-XX:+UseParallelGC -Xmx128M -Xms128M")) { |
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If all of these need increased heap mem, maybe that should be the default?
| actualMetrics); | ||
| } | ||
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| private static void assertGCMetric(final List<Map<String, Object>> actualMetrics, |
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can this be implemented in terms of the above assertGCMetric? It looks like most of the tests use the above version
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| @Test | ||
| public void testJMXDirectBasic() throws Exception { | ||
| try (final SimpleAppContainer container = new SimpleAppContainer()){ |
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Was there any specific reason why you decided to leave in SimpleApp in addition to misbehaving-jmx-server?
| @@ -123,12 +122,16 @@ static void stopJMXServer() throws IOException, InterruptedException { | |||
| } | |||
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| static void startJMXServer() throws IOException { | |||
| ProcessBuilder pb = new ProcessBuilder("java", | |||
| final String misbehavingOpts = System.getenv("MISBEHAVING_OPTS"); | |||
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Can you add something to the docs about this var and what format it should have?
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| echo "Using `java --version`" | ||
| echo "With JAVA_OPTS '${JAVA_OPTS}'" | ||
| CONTAINER_IP=`awk 'END{print $1}' /etc/hosts` |
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TIL awk keeps the last line's vars around for access in END https://www.gnu.org/software/gawk/manual/html_node/I_002fO-And-BEGIN_002fEND.html
drichards-87
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Dec 21, 2023
Co-authored-by: DeForest Richards <[email protected]>
scottopell
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Dec 21, 2023
carlosroman
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Also added tests for GC metrics.