jolshan commented on code in PR #15324:
URL: https://github.com/apache/kafka/pull/15324#discussion_r1483652492
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jmh-benchmarks/src/main/java/org/apache/kafka/jmh/storage/ProducerStateManagerBench.java:
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@@ -0,0 +1,82 @@
+package org.apache.kafka.jmh.storage;
+
+import org.apache.kafka.common.TopicPartition;
+import org.apache.kafka.common.utils.Time;
+import org.apache.kafka.storage.internals.log.ProducerStateEntry;
+import org.apache.kafka.storage.internals.log.ProducerStateManager;
+import org.apache.kafka.storage.internals.log.ProducerStateManagerConfig;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Fork;
+import org.openjdk.jmh.annotations.Level;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Param;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.TearDown;
+import org.openjdk.jmh.annotations.Threads;
+import org.openjdk.jmh.annotations.Warmup;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Optional;
+import java.util.OptionalLong;
+import java.util.concurrent.TimeUnit;
+
+@Warmup(iterations = 2)
+@Measurement(iterations = 3)
+@Fork(1)
+@BenchmarkMode(Mode.AverageTime)
+@State(value = Scope.Benchmark)
+@OutputTimeUnit(TimeUnit.NANOSECONDS)
+public class ProducerStateManagerBench {
+ final Time time = Time.SYSTEM;
Review Comment:
Nit -- not a huge difference here either but could we mock time?
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