aratno commented on code in PR #3926: URL: https://github.com/apache/cassandra/pull/3926#discussion_r1968018552
########## test/microbench/org/apache/cassandra/test/microbench/SchemaBench.java: ########## @@ -0,0 +1,97 @@ +/* + * 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.cassandra.test.microbench; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.TimeUnit; + +import org.apache.cassandra.schema.DistributedSchema; +import org.apache.cassandra.schema.KeyspaceMetadata; +import org.apache.cassandra.schema.KeyspaceParams; +import org.apache.cassandra.schema.Keyspaces; +import org.apache.cassandra.tcm.Epoch; +import org.openjdk.jmh.annotations.Benchmark; +import org.openjdk.jmh.annotations.BenchmarkMode; +import org.openjdk.jmh.annotations.Fork; +import org.openjdk.jmh.annotations.Level; +import org.openjdk.jmh.annotations.Measurement; +import org.openjdk.jmh.annotations.Mode; +import org.openjdk.jmh.annotations.OutputTimeUnit; +import org.openjdk.jmh.annotations.Param; +import org.openjdk.jmh.annotations.Scope; +import org.openjdk.jmh.annotations.Setup; +import org.openjdk.jmh.annotations.State; +import org.openjdk.jmh.annotations.Threads; +import org.openjdk.jmh.annotations.Warmup; + +@BenchmarkMode(Mode.All) +@OutputTimeUnit(TimeUnit.NANOSECONDS) +@Warmup(iterations = 1) +@Measurement(iterations = 5) +@Fork(value = 1, jvmArgsAppend = "-Xmx512M") +@Threads(1) +@State(Scope.Benchmark) +public class SchemaBench +{ + public static class BenchmarkingDistributedSchema extends DistributedSchema + { + public BenchmarkingDistributedSchema(Keyspaces keyspaces, Epoch epoch, boolean validate) + { + super(keyspaces, epoch, validate); + } + + @Override + public void validate() + { + super.validate(); + } + } + + @Param({"1", "1000", "10000"}) + int numKeyspaces; + + private BenchmarkingDistributedSchema schema; + + @Setup(Level.Trial) + public void setUp() throws IOException + { + createSchema(); + } + + private void createSchema() + { + List<KeyspaceMetadata> keyspaceMetadatas = new ArrayList<>(numKeyspaces); + for (int i = 0; i < numKeyspaces; i++) + { + String keyspaceName = String.format("ks_%d", i); + keyspaceMetadatas.add(KeyspaceMetadata.create(keyspaceName, KeyspaceParams.simple(3))); + } + + Keyspaces keyspaces = Keyspaces.of(keyspaceMetadatas.toArray(new KeyspaceMetadata[numKeyspaces])); + schema = new BenchmarkingDistributedSchema(keyspaces, Epoch.EMPTY, false); Review Comment: I wanted to remove the constructor from the benchmark measurement because it calls `BTreeMap#with` for each keyspace, which isn't cheap in a loop. But both benchmarks would be including this path, so the comparison would still stand, would just have more noise. Happy to revert the test constructor change, remove the benchmark, or both - let me know what you prefer. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: pr-unsubscr...@cassandra.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: pr-unsubscr...@cassandra.apache.org For additional commands, e-mail: pr-h...@cassandra.apache.org
