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Posted to issues@flink.apache.org by gallenvara <gi...@git.apache.org> on 2015/10/20 10:47:52 UTC
[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
GitHub user gallenvara opened a pull request:
https://github.com/apache/flink/pull/1270
[FLINK-2869] [tests] Apply JMH on IOManagerPerformanceBenchmark class.
JMH is a Java harness for building, running, and analysing nano/micro/milli/macro benchmarks.Use JMH to replace the old micro benchmarks method in order to get much more accurate results.Modify the `IOManagerPerformanceBenchmark` class and move it to `flink-benchmark` module.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gallenvara/flink IOManagerPerformanceBenchmark
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1270.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1270
----
commit dfcda0bc80fc9aaf01bfb73fb63b1e9351b8986a
Author: gallenvara <ga...@126.com>
Date: 2015-10-20T01:49:34Z
[FLINK-2869] [tests] Apply JMH on IOManagerPerformanceBenchmark class.
----
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[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by fhueske <gi...@git.apache.org>.
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1270#discussion_r43203880
--- Diff: flink-benchmark/src/test/java/org/apache/flink/benchmark/runtime/io/disk/iomanager/IOManagerPerformanceBenchmark.java ---
@@ -0,0 +1,613 @@
+/*
+ * 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.flink.benchmark.runtime.io.disk.iomanager;
+
+import org.apache.flink.core.memory.InputViewDataInputStreamWrapper;
+import org.apache.flink.core.memory.MemorySegment;
+import org.apache.flink.core.memory.OutputViewDataOutputStreamWrapper;
+import org.apache.flink.runtime.io.disk.iomanager.*;
+import org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable;
+import org.apache.flink.runtime.memory.MemoryManager;
+import org.apache.flink.runtime.operators.testutils.DummyInvokable;
+import org.apache.flink.types.IntValue;
+import org.junit.Assert;
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+@State(Scope.Thread)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.MILLISECONDS)
+public class IOManagerPerformanceBenchmark {
+
+ private static final Logger LOG = LoggerFactory.getLogger(IOManagerPerformanceBenchmark.class);
+
+ @Param({"4096", "16384", "524288"})
+ private int segmentSizesAligned;
+
+ @Param({"3862", "16895", "500481"})
+ private int segmentSizesUnaligned;
+
+ @Param({"1", "2", "4", "6"})
+ private int numSegment;
+
+ private static int numBlocks;
+
+ private static final long MEMORY_SIZE = 32 * 1024 * 1024;
+
+ private static final int NUM_INTS_WRITTEN = 100000000;
+
+ private static final AbstractInvokable memoryOwner = new DummyInvokable();
+
+ private MemoryManager memManager;
+
+ private IOManager ioManager;
+
+ private static FileIOChannel.ID fileIOChannel;
+
+ private static File ioManagerTempFile1;
+
+ private static File ioManagerTempFile2;
+
+ private static File speedTestNIOTempFile1;
+
+ private static File speedTestNIOTempFile2;
+
+ private static File speedTestNIOTempFile3;
+
+ private static File speedTestNIOTempFile4;
+
+
+ @Setup
+ public void startup() throws Exception {
+ memManager = new MemoryManager(MEMORY_SIZE, 1);
+ ioManager = new IOManagerAsync();
+ this.testChannelWriteWithSegments(numSegment);
+ ioManagerTempFile1 = this.createReadTempFile(segmentSizesAligned);
+ ioManagerTempFile2 = this.createReadTempFile(segmentSizesUnaligned);
+ speedTestNIOTempFile1 = creatSpeedTestNIOTempFile(segmentSizesAligned, true);
+ speedTestNIOTempFile2 = creatSpeedTestNIOTempFile(segmentSizesAligned, false);
+ speedTestNIOTempFile3 = creatSpeedTestNIOTempFile(segmentSizesUnaligned, true);
+ speedTestNIOTempFile4 = creatSpeedTestNIOTempFile(segmentSizesUnaligned, false);
+
+ }
+
+ @TearDown
+ public void afterTest() throws Exception {
+ ioManager.shutdown();
+ Assert.assertTrue("IO Manager has not properly shut down.", ioManager.isProperlyShutDown());
+
+ Assert.assertTrue("Not all memory was returned to the memory manager in the test.", memManager.verifyEmpty());
+ memManager.shutdown();
+ memManager = null;
+ }
+
+// ------------------------------------------------------------------------
+
+ private File createReadTempFile(int bufferSize) throws IOException {
+ final FileIOChannel.ID tmpChannel = ioManager.createChannel();
+ final IntValue rec = new IntValue(0);
+
+ File tempFile = null;
+ DataOutputStream daos = null;
+
+ try {
+ tempFile = new File(tmpChannel.getPath());
+
+ FileOutputStream fos = new FileOutputStream(tempFile);
+ daos = new DataOutputStream(new BufferedOutputStream(fos, bufferSize));
+
+ int valsLeft = NUM_INTS_WRITTEN;
+ while (valsLeft-- > 0) {
+ rec.setValue(valsLeft);
+ rec.write(new OutputViewDataOutputStreamWrapper(daos));
+ }
+ daos.close();
+ daos = null;
+ }
+ finally {
+ // close if possible
+ if (daos != null) {
+ daos.close();
+ }
+ }
+ return tempFile;
+ }
+
+ @SuppressWarnings("resource")
+ private File creatSpeedTestNIOTempFile(int bufferSize, boolean direct) throws IOException
+ {
+ final FileIOChannel.ID tmpChannel = ioManager.createChannel();
+
+ File tempFile = null;
+ FileChannel fs = null;
+
+ try {
+ tempFile = new File(tmpChannel.getPath());
+
+ RandomAccessFile raf = new RandomAccessFile(tempFile, "rw");
+ fs = raf.getChannel();
+
+ ByteBuffer buf = direct ? ByteBuffer.allocateDirect(bufferSize) : ByteBuffer.allocate(bufferSize);
+
+ int valsLeft = NUM_INTS_WRITTEN;
+ while (valsLeft-- > 0) {
+ if (buf.remaining() < 4) {
+ buf.flip();
+ fs.write(buf);
+ buf.clear();
+ }
+ buf.putInt(valsLeft);
+ }
+
+ if (buf.position() > 0) {
+ buf.flip();
+ fs.write(buf);
+ }
+
+ fs.close();
+ raf.close();
+ fs = null;
+ }
+ finally {
+ // close if possible
+ if (fs != null) {
+ fs.close();
+ fs = null;
+ }
+ }
+ return tempFile;
+ }
+
+ @Benchmark
+ public void speedTestOutputManager() throws Exception
+ {
+ LOG.info("Starting speed test with IO Manager...");
+
+ testChannelWriteWithSegments(numSegment);
+ }
+
+ @Benchmark
+ public void speedTestInputManager() throws Exception
+ {
+ LOG.info("Starting speed test with IO Manager...");
+
+ testChannelReadWithSegments(numSegment);
+ }
+
+ private void testChannelWriteWithSegments(int numSegments) throws Exception
+ {
+ final List<MemorySegment> memory = this.memManager.allocatePages(memoryOwner, numSegments);
+ final FileIOChannel.ID channel = this.ioManager.createChannel();
+
+ BlockChannelWriter<MemorySegment> writer = null;
+
+ try {
+ writer = this.ioManager.createBlockChannelWriter(channel);
+ final ChannelWriterOutputView out = new ChannelWriterOutputView(writer, memory, this.memManager.getPageSize());
+
+ int valsLeft = NUM_INTS_WRITTEN;
+ while (valsLeft-- > 0) {
+ out.writeInt(valsLeft);
+ }
+
+ fileIOChannel = channel;
+ out.close();
+ numBlocks = out.getBlockCount();
+
+ writer.close();
+ writer = null;
+
+ memManager.release(memory);
+ }
+ finally {
+ if (writer != null) {
+ writer.closeAndDelete();
+ }
+ }
+ }
+
+ private void testChannelReadWithSegments(int numSegments) throws Exception
+ {
+ final List<MemorySegment> memory = this.memManager.allocatePages(memoryOwner, numSegments);
+ //final FileIOChannel.ID channel = this.ioManager.createChannel();
--- End diff --
remove?
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[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by fhueske <gi...@git.apache.org>.
Github user fhueske commented on the pull request:
https://github.com/apache/flink/pull/1270#issuecomment-151773654
Thanks for the update.
Looks good to merge.
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[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by gallenvara <gi...@git.apache.org>.
Github user gallenvara commented on a diff in the pull request:
https://github.com/apache/flink/pull/1270#discussion_r43212327
--- Diff: flink-benchmark/src/test/java/org/apache/flink/benchmark/runtime/io/disk/iomanager/IOManagerPerformanceBenchmark.java ---
@@ -0,0 +1,613 @@
+/*
+ * 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.flink.benchmark.runtime.io.disk.iomanager;
+
+import org.apache.flink.core.memory.InputViewDataInputStreamWrapper;
+import org.apache.flink.core.memory.MemorySegment;
+import org.apache.flink.core.memory.OutputViewDataOutputStreamWrapper;
+import org.apache.flink.runtime.io.disk.iomanager.*;
+import org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable;
+import org.apache.flink.runtime.memory.MemoryManager;
+import org.apache.flink.runtime.operators.testutils.DummyInvokable;
+import org.apache.flink.types.IntValue;
+import org.junit.Assert;
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+@State(Scope.Thread)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.MILLISECONDS)
+public class IOManagerPerformanceBenchmark {
+
+ private static final Logger LOG = LoggerFactory.getLogger(IOManagerPerformanceBenchmark.class);
+
+ @Param({"4096", "16384", "524288"})
+ private int segmentSizesAligned;
+
+ @Param({"3862", "16895", "500481"})
+ private int segmentSizesUnaligned;
+
+ @Param({"1", "2", "4", "6"})
+ private int numSegment;
+
+ private static int numBlocks;
+
+ private static final long MEMORY_SIZE = 32 * 1024 * 1024;
+
+ private static final int NUM_INTS_WRITTEN = 100000000;
+
+ private static final AbstractInvokable memoryOwner = new DummyInvokable();
+
+ private MemoryManager memManager;
+
+ private IOManager ioManager;
+
+ private static FileIOChannel.ID fileIOChannel;
+
+ private static File ioManagerTempFile1;
+
+ private static File ioManagerTempFile2;
+
+ private static File speedTestNIOTempFile1;
+
+ private static File speedTestNIOTempFile2;
+
+ private static File speedTestNIOTempFile3;
+
+ private static File speedTestNIOTempFile4;
+
+
+ @Setup
+ public void startup() throws Exception {
+ memManager = new MemoryManager(MEMORY_SIZE, 1);
+ ioManager = new IOManagerAsync();
+ this.testChannelWriteWithSegments(numSegment);
+ ioManagerTempFile1 = this.createReadTempFile(segmentSizesAligned);
--- End diff --
It's my fault that I forget to delete them.
Now i have add these operations to the `@TearDown` and submitted a new commit.
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---
[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by fhueske <gi...@git.apache.org>.
Github user fhueske commented on the pull request:
https://github.com/apache/flink/pull/1270#issuecomment-152122559
I will merge this PR.
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[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/1270
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[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by fhueske <gi...@git.apache.org>.
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1270#discussion_r43203668
--- Diff: flink-benchmark/src/test/java/org/apache/flink/benchmark/runtime/io/disk/iomanager/IOManagerPerformanceBenchmark.java ---
@@ -0,0 +1,613 @@
+/*
+ * 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.flink.benchmark.runtime.io.disk.iomanager;
+
+import org.apache.flink.core.memory.InputViewDataInputStreamWrapper;
+import org.apache.flink.core.memory.MemorySegment;
+import org.apache.flink.core.memory.OutputViewDataOutputStreamWrapper;
+import org.apache.flink.runtime.io.disk.iomanager.*;
+import org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable;
+import org.apache.flink.runtime.memory.MemoryManager;
+import org.apache.flink.runtime.operators.testutils.DummyInvokable;
+import org.apache.flink.types.IntValue;
+import org.junit.Assert;
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+@State(Scope.Thread)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.MILLISECONDS)
+public class IOManagerPerformanceBenchmark {
+
+ private static final Logger LOG = LoggerFactory.getLogger(IOManagerPerformanceBenchmark.class);
+
+ @Param({"4096", "16384", "524288"})
+ private int segmentSizesAligned;
+
+ @Param({"3862", "16895", "500481"})
+ private int segmentSizesUnaligned;
+
+ @Param({"1", "2", "4", "6"})
+ private int numSegment;
+
+ private static int numBlocks;
+
+ private static final long MEMORY_SIZE = 32 * 1024 * 1024;
+
+ private static final int NUM_INTS_WRITTEN = 100000000;
+
+ private static final AbstractInvokable memoryOwner = new DummyInvokable();
+
+ private MemoryManager memManager;
+
+ private IOManager ioManager;
+
+ private static FileIOChannel.ID fileIOChannel;
+
+ private static File ioManagerTempFile1;
+
+ private static File ioManagerTempFile2;
+
+ private static File speedTestNIOTempFile1;
+
+ private static File speedTestNIOTempFile2;
+
+ private static File speedTestNIOTempFile3;
+
+ private static File speedTestNIOTempFile4;
+
+
+ @Setup
+ public void startup() throws Exception {
+ memManager = new MemoryManager(MEMORY_SIZE, 1);
+ ioManager = new IOManagerAsync();
+ this.testChannelWriteWithSegments(numSegment);
+ ioManagerTempFile1 = this.createReadTempFile(segmentSizesAligned);
+ ioManagerTempFile2 = this.createReadTempFile(segmentSizesUnaligned);
+ speedTestNIOTempFile1 = creatSpeedTestNIOTempFile(segmentSizesAligned, true);
+ speedTestNIOTempFile2 = creatSpeedTestNIOTempFile(segmentSizesAligned, false);
+ speedTestNIOTempFile3 = creatSpeedTestNIOTempFile(segmentSizesUnaligned, true);
+ speedTestNIOTempFile4 = creatSpeedTestNIOTempFile(segmentSizesUnaligned, false);
+
+ }
+
+ @TearDown
+ public void afterTest() throws Exception {
+ ioManager.shutdown();
+ Assert.assertTrue("IO Manager has not properly shut down.", ioManager.isProperlyShutDown());
+
+ Assert.assertTrue("Not all memory was returned to the memory manager in the test.", memManager.verifyEmpty());
+ memManager.shutdown();
+ memManager = null;
+ }
+
+// ------------------------------------------------------------------------
+
+ private File createReadTempFile(int bufferSize) throws IOException {
+ final FileIOChannel.ID tmpChannel = ioManager.createChannel();
+ final IntValue rec = new IntValue(0);
+
+ File tempFile = null;
+ DataOutputStream daos = null;
+
+ try {
+ tempFile = new File(tmpChannel.getPath());
+
+ FileOutputStream fos = new FileOutputStream(tempFile);
+ daos = new DataOutputStream(new BufferedOutputStream(fos, bufferSize));
+
+ int valsLeft = NUM_INTS_WRITTEN;
+ while (valsLeft-- > 0) {
+ rec.setValue(valsLeft);
+ rec.write(new OutputViewDataOutputStreamWrapper(daos));
+ }
+ daos.close();
+ daos = null;
+ }
+ finally {
+ // close if possible
+ if (daos != null) {
+ daos.close();
+ }
+ }
+ return tempFile;
+ }
+
+ @SuppressWarnings("resource")
+ private File creatSpeedTestNIOTempFile(int bufferSize, boolean direct) throws IOException
--- End diff --
should be creat**e**SpeedTestNIOTempFile
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---
[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by fhueske <gi...@git.apache.org>.
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1270#discussion_r43204232
--- Diff: flink-benchmark/src/test/java/org/apache/flink/benchmark/runtime/io/disk/iomanager/IOManagerPerformanceBenchmark.java ---
@@ -0,0 +1,613 @@
+/*
+ * 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.flink.benchmark.runtime.io.disk.iomanager;
+
+import org.apache.flink.core.memory.InputViewDataInputStreamWrapper;
+import org.apache.flink.core.memory.MemorySegment;
+import org.apache.flink.core.memory.OutputViewDataOutputStreamWrapper;
+import org.apache.flink.runtime.io.disk.iomanager.*;
+import org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable;
+import org.apache.flink.runtime.memory.MemoryManager;
+import org.apache.flink.runtime.operators.testutils.DummyInvokable;
+import org.apache.flink.types.IntValue;
+import org.junit.Assert;
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.runner.Runner;
+import org.openjdk.jmh.runner.options.Options;
+import org.openjdk.jmh.runner.options.OptionsBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+@State(Scope.Thread)
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.MILLISECONDS)
+public class IOManagerPerformanceBenchmark {
+
+ private static final Logger LOG = LoggerFactory.getLogger(IOManagerPerformanceBenchmark.class);
+
+ @Param({"4096", "16384", "524288"})
+ private int segmentSizesAligned;
+
+ @Param({"3862", "16895", "500481"})
+ private int segmentSizesUnaligned;
+
+ @Param({"1", "2", "4", "6"})
+ private int numSegment;
+
+ private static int numBlocks;
+
+ private static final long MEMORY_SIZE = 32 * 1024 * 1024;
+
+ private static final int NUM_INTS_WRITTEN = 100000000;
+
+ private static final AbstractInvokable memoryOwner = new DummyInvokable();
+
+ private MemoryManager memManager;
+
+ private IOManager ioManager;
+
+ private static FileIOChannel.ID fileIOChannel;
+
+ private static File ioManagerTempFile1;
+
+ private static File ioManagerTempFile2;
+
+ private static File speedTestNIOTempFile1;
+
+ private static File speedTestNIOTempFile2;
+
+ private static File speedTestNIOTempFile3;
+
+ private static File speedTestNIOTempFile4;
+
+
+ @Setup
+ public void startup() throws Exception {
+ memManager = new MemoryManager(MEMORY_SIZE, 1);
+ ioManager = new IOManagerAsync();
+ this.testChannelWriteWithSegments(numSegment);
+ ioManagerTempFile1 = this.createReadTempFile(segmentSizesAligned);
--- End diff --
are these files deleted after the benchmark completed?
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[GitHub] flink pull request: [FLINK-2869] [tests] Apply JMH on IOManagerPer...
Posted by gallenvara <gi...@git.apache.org>.
Github user gallenvara commented on the pull request:
https://github.com/apache/flink/pull/1270#issuecomment-149765941
Part of the JMH benchmark result :
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