feat: Collect GC, Compile Time and Heap Metrics

src/it/java/io/deephaven/benchmark/tests/standard/StandardTestRunner.java

@@ -90,7 +90,7 @@ public void groupedTable(String name, String... groups) {
         mainTable = name;
         generateTable(name, null, groups);
     }
-    
+
     public void setServices(String... services) {
         requiredServices.clear();
         requiredServices.addAll(Arrays.asList(services));
@@ -225,16 +225,16 @@ Result runStaticTest(String name, String operation, String read, String... loadC
         ${mainTable} = ${readTable}
         loaded_tbl_size = ${mainTable}.size
         ${setupQueries}
-
-        garbage_collect()
-
         ${preOpQueries}
+        bench_api_metrics_start()
         print('${logOperationBegin}')
-        
+
         begin_time = time.perf_counter_ns()
         result = ${operation}
         end_time = time.perf_counter_ns()
+
         print('${logOperationEnd}')
+        bench_api_metrics_end()
         standard_metrics = bench_api_metrics_collect()
 
         stats = new_table([
@@ -260,11 +260,9 @@ Result runIncTest(String name, String operation, String read, String... loadColu
         if right: 
             right_filter = autotune(0, 1010000, 1.0, True)
             right = right.where(right_filter)
-            print('Using Inc Right')
-
-        garbage_collect()
 
         ${preOpQueries}
+        bench_api_metrics_start()
         print('${logOperationBegin}')
         begin_time = time.perf_counter_ns()
         result = ${operation}
@@ -280,6 +278,7 @@ Result runIncTest(String name, String operation, String read, String... loadColu
 
         end_time = time.perf_counter_ns()
         print('${logOperationEnd}')
+        bench_api_metrics_end()
         standard_metrics = bench_api_metrics_collect()
 
         stats = new_table([
@@ -296,7 +295,7 @@ Result runTest(String name, String query, String operation, String read, String.
             initialize(testInst);
         api.setName(name);
         stopUnusedServices(requiredServices);
-        
+
         query = query.replace("${readTable}", read);
         query = query.replace("${mainTable}", mainTable);
         query = query.replace("${loadSupportTables}", loadSupportTables());
@@ -381,16 +380,16 @@ void restartServices() {
         if (!controller.restartService())
             return;
         var metrics = new Metrics(Timer.now(), "test-runner", "setup.services");
-        metrics.set("restart", timer.duration().toMillis(), "standard");
+        metrics.set("restart", timer.duration().toMillis() / 1000.0, "standard");
         api.metrics().add(metrics);
     }
-    
+
     void stopUnusedServices(Set<String> keepServices) {
         var timer = api.timer();
         if (!controller.stopService(keepServices))
             return;
         var metrics = new Metrics(Timer.now(), "test-runner", "setup.services");
-        metrics.set("stop", timer.duration().toMillis(), "standard");
+        metrics.set("stop", timer.duration().toMillis() / 1000.0, "standard");
         api.metrics().add(metrics);
     }
 

src/it/java/io/deephaven/benchmark/tests/standard/file/FileTestRunner.java

@@ -170,9 +170,12 @@ void runCsvWriteTest(String testName, String... columnNames) {
      */
     private void runReadTest(String testName, String readQuery, String... columnNames) {
         var q = """
+        bench_api_metrics_init()
+        bench_api_metrics_start()
         begin_time = time.perf_counter_ns()
         source = ${readQuery}
         end_time = time.perf_counter_ns()
+        bench_api_metrics_end()
         standard_metrics = bench_api_metrics_collect()
 
         stats = new_table([
@@ -194,9 +197,12 @@ private void runWriteTest(String testName, String writeQuery, String... columnNa
         else:
             source = empty_table(${rowCount}).update([${generators}])
 
+        bench_api_metrics_init()
+        bench_api_metrics_start()
         begin_time = time.perf_counter_ns()
         ${writeQuery}
         end_time = time.perf_counter_ns()
+        bench_api_metrics_end()
         standard_metrics = bench_api_metrics_collect()
 
         stats = new_table([

src/it/java/io/deephaven/benchmark/tests/standard/kafka/KafkaTestRunner.java

@@ -44,7 +44,7 @@ class KafkaTestRunner {
      * If a {@code docker.compose.file} is specified in supplied runtime properties, restart the corresponding docker
      * images with Deephaven max heap set to the given gigabytes.
      * 
-     * @param deephavenHeapGigs the number of gigabytes to use for Deephave max heap
+     * @param deephavenHeapGigs the number of gigabytes to use for Deephaven max heap
      */
     void restartWithHeap(int deephavenHeapGigs) {
         String dockerComposeFile = api.property("docker.compose.file", "");
@@ -106,6 +106,7 @@ void runTest(String operation, String tableType) {
         import deephaven.dtypes as dht
 
         bench_api_metrics_init()
+        bench_api_metrics_start()
         kc_spec = ${kafkaConsumerSpec}
 
         begin_time = time.perf_counter_ns()
@@ -121,6 +122,7 @@ void runTest(String operation, String tableType) {
         ${awaitTableLoad}
 
         end_time = time.perf_counter_ns()
+        bench_api_metrics_end()
         standard_metrics = bench_api_metrics_collect()
 
         stats = new_table([

src/main/java/io/deephaven/benchmark/api/Snippets.java

@@ -1,8 +1,8 @@
-/* Copyright (c) 2022-2023 Deephaven Data Labs and Patent Pending */
+/* Copyright (c) 2022-2024 Deephaven Data Labs and Patent Pending */
 package io.deephaven.benchmark.api;
 
 /**
- * Contains snippets of query code that can be called inside a query
+ * Contains snippets of python functions that can be called inside a query executed on the Deephaven Engine
  */
 class Snippets {
     /**
@@ -74,7 +74,8 @@ with exclusive_lock(table):
         """;
 
     /**
-     * Initialize the container for storing benchmark metrics
+     * Initialize the container for storing benchmark metrics. Define functions for getting some MX Bean data for gc,
+     * jit and heap
      * <p>
      * ex. bench_api_metrics_init()
      */
@@ -85,10 +86,76 @@ def bench_api_metrics_init():
         """;
 
     /**
-     * Captures the value of the first column in a table every Deephaven ticking interval and does not allow advancement
-     * in the current query logic until that value is reached
+     * Get the MX bean for the given getter factory method that works from
+     * <code>java.lang.management.ManagementFactory</code>
+     */
+    static String bench_api_get_bean = """
+        import jpy
+        def bench_api_get_bean(bean_getter):
+            return getattr(jpy.get_type('java.lang.management.ManagementFactory'),bean_getter)()
+        """;
+
+    /**
+     * Get the current JVM heap usage in bytes
+     */
+    static String bench_api_mem_usage = """
+        def bench_api_mem_usage():
+            return bench_api_get_bean('getMemoryMXBean').getHeapMemoryUsage().getUsed()
+        """;
+
+    /**
+     * Get the accumulated compile time
+     */
+    static String bench_api_compile_time = """
+        def bench_api_compile_time():
+            return bench_api_get_bean('getCompilationMXBean').getTotalCompilationTime()
+        """;
+
+    /**
+     * Get the accumulated total time spent in GC and GC count
+     */
+    static String bench_api_gc_info = """
+        def bench_api_gc_info():
+            total = 0.0; count = 0
+            beans = bench_api_get_bean('getGarbageCollectorMXBeans')
+            for i in range(0, beans.size()):
+                b = beans.get(i)
+                total = total + b.getCollectionTime()
+                count = count + b.getCollectionCount()
+            return total, count
+        """;
+
+    /**
+     * Set heap usage, compile time, GC time and GC Count to global variables
+     */
+    static String bench_api_metrics_start = """
+        from deephaven import garbage_collect   
+        def bench_api_metrics_start():
+            global bench_mem_usage, bench_compile_time, bench_gc_time, bench_gc_count
+            garbage_collect()
+            bench_compile_time = bench_api_compile_time()
+            bench_gc_time, bench_gc_count = bench_api_gc_info()
+            bench_mem_usage = bench_api_mem_usage()
+        """;
+
+    /**
+     * Get difference from <code>bench_api_metrics_start values and add as collected metrics
+     */
+    static String bench_api_metrics_end = """
+        def bench_api_metrics_end():
+            bench_api_metrics_add('operation','compile.time',(bench_api_compile_time()-bench_compile_time)/1000.0)
+            gc_time, gc_count = bench_api_gc_info()
+            bench_api_metrics_add('operation','gc.time',(gc_time - bench_gc_time)/1000.0)
+            bench_api_metrics_add('operation','gc.count',gc_count - bench_gc_count)
+            garbage_collect()
+            bench_api_metrics_add('operation','heap.gain',bench_api_mem_usage() - bench_mem_usage) 
+        """;
+
+    /**
+     * Add a metrics to the accumulated list of metrics that will be transformed by
+     * <code>bench_api_metrics_collect</code> into a Deephaven table for retrieval
      * <p>
-     * ex. bench_api_metrics_add('docker', 'restart.secs', 5.1, 'restart duration in between tests')
+     * ex. bench_api_metrics_add('docker', 'restart.secs', '5.1', 'restart duration in between tests')
      * 
      * @param category the metric category
      * @param name the name of the metric
@@ -126,18 +193,26 @@ def bench_api_metrics_collect():
      * @return a query containing function definitions
      */
     static String getFunctions(String query) {
-        String functionDefs = "";
-        functionDefs += getFunction("bench_api_kafka_consume", bench_api_kafka_consume, query);
-        functionDefs += getFunction("bench_api_await_table_size", bench_api_await_table_size, query);
-        functionDefs += getFunction("bench_api_metrics_init", bench_api_metrics_init, query);
-        functionDefs += getFunction("bench_api_metrics_add", bench_api_metrics_add, query);
-        functionDefs += getFunction("bench_api_metrics_collect", bench_api_metrics_collect, query);
-        functionDefs += getFunction("bench_api_await_column_value_limit", bench_api_await_column_value_limit, query);
-        return functionDefs;
+        String defs = "";
+        defs += getFunc("bench_api_kafka_consume", bench_api_kafka_consume, query, "");
+        defs += getFunc("bench_api_await_table_size", bench_api_await_table_size, query, defs);
+        defs += getFunc("bench_api_metrics_init", bench_api_metrics_init, query, defs);
+        defs += getFunc("bench_api_metrics_start", bench_api_metrics_start, query, defs);
+        defs += getFunc("bench_api_metrics_end", bench_api_metrics_end, query, defs);
+        defs += getFunc("bench_api_mem_usage", bench_api_mem_usage, query, defs);
+        defs += getFunc("bench_api_compile_time", bench_api_compile_time, query, defs);
+        defs += getFunc("bench_api_gc_info", bench_api_gc_info, query, defs);
+        defs += getFunc("bench_api_get_bean", bench_api_get_bean, query, defs);
+        defs += getFunc("bench_api_metrics_add", bench_api_metrics_add, query, defs);
+        defs += getFunc("bench_api_metrics_collect", bench_api_metrics_collect, query, defs);
+        defs += getFunc("bench_api_await_column_value_limit", bench_api_await_column_value_limit, query, defs);
+        return defs;
     }
 
-    static String getFunction(String functionName, String functionDef, String query) {
-        return query.contains(functionName) ? (functionDef + System.lineSeparator()) : "";
+    static String getFunc(String functionName, String functionDef, String query, String funcs) {
+        if (!query.contains(functionName) && !funcs.contains(functionName))
+            return "";
+        return functionDef + System.lineSeparator();
     }
 
 }