| /* |
| * 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.uima.ducc.agent.launcher; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.locks.Lock; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| import org.apache.uima.ducc.agent.NodeAgent; |
| import org.apache.uima.ducc.common.utils.DuccLogger; |
| import org.apache.uima.ducc.common.utils.id.DuccIdFactory; |
| |
| public class CGroupsTest { |
| public static DuccLogger logger = DuccLogger.getLogger(NodeAgent.class, "CGroupsTest"); |
| |
| CGroupsManager cgroupsManager = null; |
| |
| DuccIdFactory idFactory = null; |
| |
| Lock lock = new ReentrantLock(); |
| |
| public static void main(String[] args) { |
| try { |
| CGroupsTest tester = new CGroupsTest(); |
| tester.initialize(); |
| if (args.length > 1) { |
| // run concurrent threads |
| tester.run(Long.parseLong(args[0]), true); |
| } else { |
| // run sequentially |
| tester.run(Long.parseLong(args[0]), false); |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| public void run(long howMany, boolean concurrent) { |
| try { |
| CGroupsTest tester = new CGroupsTest(); |
| tester.initialize(); |
| ExecutorService executor = Executors.newCachedThreadPool(); |
| // more than 1 arg to this program = concurrent |
| if (concurrent) { |
| for (int i = 0; i < howMany; i++) { |
| WorkerThread t = new WorkerThread(); |
| executor.execute(t); |
| // if the wait below is removed, cgroup creation fails |
| synchronized (t) { |
| // NOTE: waiting for 100ms seems to make cgcreate working. |
| // Tested 10ms and got a failure to create cgroup. Weird. |
| t.wait(100); |
| } |
| } |
| } else { |
| for (int i = 0; i < howMany; i++) { |
| WorkerThread t = new WorkerThread(); |
| Future<?> f = executor.submit(t); |
| f.get(); |
| |
| } |
| } |
| executor.shutdownNow(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| |
| } |
| |
| public void initialize() throws Exception { |
| |
| idFactory = new DuccIdFactory(); |
| String cgroupsUtilsDirs = System.getProperty("ducc.agent.launcher.cgroups.utils.dir"); |
| String cgUtilsPath = null; |
| if (cgroupsUtilsDirs == null) { |
| cgUtilsPath = "/bin"; // default |
| } |
| // get the top level cgroup folder from ducc.properties. If |
| // not defined, use /cgroup/ducc as default |
| String cgroupsBaseDir = System.getProperty("ducc.agent.launcher.cgroups.basedir"); |
| if (cgroupsBaseDir == null) { |
| cgroupsBaseDir = "/cgroup/ducc"; |
| } |
| String cgroupsSubsystems = "memory,cpu"; |
| long maxTimeToWaitForProcessToStop = 60000; // default 1 minute |
| |
| cgroupsManager = new CGroupsManager(cgUtilsPath, cgroupsBaseDir, cgroupsSubsystems, logger, |
| maxTimeToWaitForProcessToStop); |
| |
| } |
| |
| public class WorkerThread implements Runnable { |
| public WorkerThread() { |
| |
| } |
| |
| public void run() { |
| try { |
| String containerId; |
| lock.lock(); |
| containerId = idFactory.next().toString() + "." + idFactory.next().toString(); |
| |
| System.out.println(">>>> Thread::" + Thread.currentThread().getId() |
| + " creating cgroup with id:" + containerId); |
| if (!cgroupsManager.createContainer(containerId, System.getProperty("user.name"), |
| cgroupsManager.getUserGroupName(System.getProperty("user.name")), true)) { |
| System.out.println("Thread::" + Thread.currentThread().getId() |
| + " Failure to create cgroup with id:" + containerId); |
| System.exit(-1); |
| |
| } else { |
| if (cgroupsManager |
| .cgroupExists(cgroupsManager.getDuccCGroupBaseDir() + "/" + containerId)) { |
| System.out.println("Thread::" + Thread.currentThread().getId() |
| + " Success creating cgroup with id:" + containerId); |
| |
| cgroupsManager.setContainerSwappiness(containerId, cgroupsManager.getDuccUid(), true, |
| 10); |
| } else { |
| System.out.println("Failed to validate existance of cgroup with id:" + containerId); |
| System.exit(-1); |
| } |
| } |
| cgroupsManager.destroyContainer(containerId, cgroupsManager.getDuccUid(), |
| NodeAgent.SIGTERM); |
| System.out.println("Cgroup " + containerId + " Removed"); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| // System.exit(-1); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| } |
| } |