From ab9d64b3e384f252de13ad058cd33c305439713d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafael=20Merino=20Garc=C3=ADa?= <imrafaelmerino@gmail.com>
Date: Fri, 12 Jan 2024 19:02:31 +0100
Subject: [PATCH] second try: just testing with the chunk size and gc tunning

---
 calculate_average_imrafaelmerino.sh                           | 4 ++--
 .../dev/morling/onebrc/CalculateAverage_imrafaelmerino.java   | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/calculate_average_imrafaelmerino.sh b/calculate_average_imrafaelmerino.sh
index 162a308..58b72a2 100755
--- a/calculate_average_imrafaelmerino.sh
+++ b/calculate_average_imrafaelmerino.sh
@@ -15,7 +15,7 @@
 #  limitations under the License.
 #
 
-JAVA_OPTS=""
-CHUNK_SIZE=$((8 * 1024 * 1024))
+JAVA_OPTS="-Xms1024m -Xms1024m -XX:+UseParallelGC -XX:MaxHeapFreeRatio=10 -XX:ParallelGCThreads=2"
+CHUNK_SIZE=$((50 * 1024 * 1024))
 java $JAVA_OPTS --class-path target/average-1.0.0-SNAPSHOT.jar \
 dev.morling.onebrc.CalculateAverage_imrafaelmerino $CHUNK_SIZE
diff --git a/src/main/java/dev/morling/onebrc/CalculateAverage_imrafaelmerino.java b/src/main/java/dev/morling/onebrc/CalculateAverage_imrafaelmerino.java
index 303e9ff..4777fd9 100644
--- a/src/main/java/dev/morling/onebrc/CalculateAverage_imrafaelmerino.java
+++ b/src/main/java/dev/morling/onebrc/CalculateAverage_imrafaelmerino.java
@@ -144,6 +144,7 @@ public class CalculateAverage_imrafaelmerino {
         var field = new byte[FIELD_SIZE];
         while (bb.position() < limit) {
             var fieldCurrentIndex = 0;
+            field[fieldCurrentIndex++] = bb.get();
             while (bb.position() < limit) {
                 var fieldByte = bb.get();
                 if (fieldByte == ';')