| /* |
| * 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.IOException; |
| 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.CpuCore; |
| |
| /** |
| * Report the guaranteed number of ms this worker has requested. |
| * It gets the result from cpu.cfs_period_us and cpu.cfs_quota_us. |
| * Use this when org.apache.storm.container.docker.DockerManager is used as the storm.resource.isolation.plugin. |
| */ |
| public class CGroupCpuGuaranteeByCfsQuota extends CGroupMetricsBase<Long> { |
| long previousTime = 0; |
| |
| public CGroupCpuGuaranteeByCfsQuota(Map<String, Object> conf) { |
| super(conf, SubSystemType.cpu); |
| } |
| |
| @Override |
| public Long getDataFrom(CgroupCore core) throws IOException { |
| CpuCore cpu = (CpuCore) core; |
| Long msGuarantee = null; |
| long now = System.currentTimeMillis(); |
| if (previousTime > 0) { |
| long cpuCfsQuotaUs = cpu.getCpuCfsQuotaUs(); |
| if (cpuCfsQuotaUs == -1) { |
| //cpu.cfs_quota_us = -1 indicates that the cgroup does not adhere to any CPU time restrictions. |
| msGuarantee = -1L; |
| } else { |
| long cpuCfsPeriodUs = cpu.getCpuCfsPeriodUs(); |
| double percentage = cpuCfsQuotaUs * 1.0 / cpuCfsPeriodUs; |
| msGuarantee = Math.round(percentage * (now - previousTime)); |
| } |
| } |
| previousTime = now; |
| return msGuarantee; |
| } |
| } |