nizhikov commented on code in PR #14588:
URL: https://github.com/apache/kafka/pull/14588#discussion_r1386961908


##########
tools/src/test/java/org/apache/kafka/tools/other/ReplicationQuotasTestRig.java:
##########
@@ -0,0 +1,481 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.kafka.tools.other;
+
+import kafka.log.UnifiedLog;
+import kafka.server.KafkaConfig;
+import kafka.server.KafkaServer;
+import kafka.server.QuorumTestHarness;
+import kafka.server.QuotaType;
+import kafka.utils.EmptyTestInfo;
+import kafka.utils.Exit;
+import kafka.utils.TestUtils;
+import org.apache.kafka.clients.admin.Admin;
+import org.apache.kafka.clients.admin.AdminClientConfig;
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.ProducerRecord;
+import org.apache.kafka.common.MetricName;
+import org.apache.kafka.common.Node;
+import org.apache.kafka.common.TopicPartition;
+import org.apache.kafka.common.TopicPartitionInfo;
+import org.apache.kafka.common.security.auth.SecurityProtocol;
+import org.apache.kafka.common.serialization.ByteArraySerializer;
+import org.apache.kafka.common.utils.Time;
+import org.apache.kafka.common.utils.Utils;
+import org.apache.kafka.tools.reassign.ReassignPartitionsCommand;
+import org.apache.log4j.PropertyConfigurator;
+import org.jfree.chart.ChartFactory;
+import org.jfree.chart.ChartFrame;
+import org.jfree.chart.JFreeChart;
+import org.jfree.chart.plot.PlotOrientation;
+import org.jfree.data.xy.XYSeries;
+import org.jfree.data.xy.XYSeriesCollection;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import scala.Option;
+import scala.collection.JavaConverters;
+import scala.collection.Seq;
+
+import javax.imageio.ImageIO;
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.nio.file.Files;
+import java.text.DecimalFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Properties;
+import java.util.TreeMap;
+import java.util.concurrent.ExecutionException;
+import java.util.function.Function;
+import java.util.function.IntSupplier;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+import static java.nio.file.StandardOpenOption.APPEND;
+import static java.nio.file.StandardOpenOption.CREATE;
+import static org.apache.kafka.test.TestUtils.DEFAULT_MAX_WAIT_MS;
+
+/**
+ * Test rig for measuring throttling performance. Configure the parameters for 
a set of experiments, then execute them
+ * and view the html output file, with charts, that are produced. You can also 
render the charts to the screen if
+ * you wish.
+ *
+ * Currently you'll need about 40GB of disk space to run these experiments 
(largest data written x2). Tune the msgSize
+ * & #partitions and throttle to adjust this.
+ *
+ * To run this tool without excessive logging add to jvm params 
"-Dlog4j2.configurationFile=classpath:log4j2-off.properties"
+ */
+public class ReplicationQuotasTestRig {
+    public static final Logger LOGGER = 
LoggerFactory.getLogger(ReplicationQuotasTestRig.class);
+
+    public static final int K = 1000 * 1000;
+
+    private static final String DIR;
+
+    static {
+        
PropertyConfigurator.configure("tools/src/test/resources/log4j-off.properties");

Review Comment:
   Logging properies in `core` module and `tools` are different.
   `tools` settings enables trace logging while `core` uses warn only.
   
   core - 
https://github.com/apache/kafka/blob/trunk/core/src/test/resources/log4j.properties
   tools - 
https://github.com/apache/kafka/blob/trunk/tools/src/test/resources/log4j.properties
   
   ReplicationQuotasTestRig can be run with the default logging properties. But 
default mode generates a log of useless trace logs. 
   `log4j-off.properties` reduces logs to the level equal to core module.



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