Trigger GC at the beginning of each benchmark iteration (#1424)

Signed-off-by: Ahmed Hussein (amahussein) <[email protected]> Contributes to #1423 Trigger a GC at the beginning of each benchmark iteration
NVIDIA · Nov 15, 2024 · 197d7eb · 197d7eb
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commit 197d7eb
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diff --git a/core/src/main/scala/org/apache/spark/rapids/tool/benchmarks/Benchmark.scala b/core/src/main/scala/org/apache/spark/rapids/tool/benchmarks/Benchmark.scala
@@ -104,6 +104,7 @@ class Benchmark(
     val gcTimes = ArrayBuffer[Long]()
     //For tracking maximum GC over iterations
     for (i <- 0 until minIters) {
+      System.gc()  // ensures GC for a consistent state across different iterations
       val timer = new ToolsTimer(i)
       val memoryTracker = new MemoryMetricsTracker
       f(timer)