| /** |
| * 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.storm.metric.cgroup; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.apache.storm.container.cgroup.SubSystemType; |
| import org.apache.storm.container.cgroup.core.CgroupCore; |
| import org.apache.storm.container.cgroup.core.CpuacctCore; |
| import org.apache.storm.container.cgroup.core.CpuacctCore.StatType; |
| |
| /** |
| * Report CPU used in the cgroup. |
| */ |
| public class CGroupCpu extends CGroupMetricsBase<Map<String, Long>> { |
| long previousSystem = 0; |
| long previousUser = 0; |
| private int userHz = -1; |
| |
| public CGroupCpu(Map<String, Object> conf) { |
| super(conf, SubSystemType.cpuacct); |
| } |
| |
| @SuppressWarnings("checkstyle:AbbreviationAsWordInName") |
| public synchronized int getUserHZ() throws IOException { |
| if (userHz < 0) { |
| ProcessBuilder pb = new ProcessBuilder("getconf", "CLK_TCK"); |
| Process p = pb.start(); |
| BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); |
| String line = in.readLine().trim(); |
| userHz = Integer.valueOf(line); |
| } |
| return userHz; |
| } |
| |
| @Override |
| public Map<String, Long> getDataFrom(CgroupCore core) throws IOException { |
| CpuacctCore cpu = (CpuacctCore) core; |
| Map<StatType, Long> stat = cpu.getCpuStat(); |
| long systemHz = stat.get(StatType.system); |
| long userHz = stat.get(StatType.user); |
| long user = userHz - previousUser; |
| @SuppressWarnings("checkstyle:VariableDeclarationUsageDistance") |
| long sys = systemHz - previousSystem; |
| previousUser = userHz; |
| previousSystem = systemHz; |
| long hz = getUserHZ(); |
| HashMap<String, Long> ret = new HashMap<>(); |
| ret.put("user-ms", user * 1000 / hz); //Convert to millis |
| ret.put("sys-ms", sys * 1000 / hz); |
| return ret; |
| } |
| } |