# High cpu percent of elasticsearch **URL:** \ **Category:** Elasticsearch\ **Created:** [April 17, 2020, 7:52am UTC](https://discuss.elastic.co/t/high-cpu-percent-of-elasticsearch/228465 "2020-04-17T07:52:45Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![tiara](https://avatars.discourse-cdn.com/v4/letter/t/43a26b/32.png) [@tiara](https://discuss.elastic.co/u/tiara)\ **Post date:** [April 17, 2020, 7:52am UTC](https://discuss.elastic.co/t/high-cpu-percent-of-elasticsearch/228465/1 "2020-04-17T07:52:45Z")
Hi, We have our production cluster full use of cpu with very little index or query. We deploy two nodes each machine，each node use more than 1000% cpu with 24 cpu cores ![image](https://us1.discourse-cdn.com/elastic/original/3X/3/e/3e16d7a6711ad3d0a7fa5f0a3371dc2dddfc6e1b.png) ![image](https://us1.discourse-cdn.com/elastic/original/3X/7/d/7dbbcf335ff2905096ff229c7065316ebd1ef45d.png) - JDK 1.8.0\_131 - ES 6.3.1 - 2 nodes per machine ,echo node 31GB heap - centos 7, here is the hot\_threads： ::: {node1}{SKbtlde0Tw2Lln7\_o5mNpA}{MNez5no7T\_GcXNcq2-zu0A}{1\*\*\*\*\*\*}{1\*\*\*\*\*:9300}{xpack.installed=true} Hot threads at 2020-04-17T06:52:28.124Z, interval=1s, busiestThreads=3, ignoreIdleThreads=true: 100.3% (1s out of 1s) cpu usage by thread 'elasticsearch[node1][[transport\_server\_worker.default]][T#32]' 4/10 snapshots sharing following 62 elements java.util.zip.Deflater.deflateBytes(Native Method) java.util.zip.Deflater.deflate(Deflater.java:444) java.util.zip.Deflater.deflate(Deflater.java:366) java.util.zip.DeflaterOutputStream.deflate(DeflaterOutputStream.java:251) java.util.zip.DeflaterOutputStream.write(DeflaterOutputStream.java:211) java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) java.io.BufferedOutputStream.write(BufferedOutputStream.java:95) org.elasticsearch.common.io.stream.OutputStreamStreamOutput.writeByte(OutputStreamStreamOutput.java:35) org.elasticsearch.common.io.stream.StreamOutput.writeBoolean(StreamOutput.java:425) org.elasticsearch.common.io.stream.StreamOutput.writeOptionalWriteable(StreamOutput.java:806) org.elasticsearch.cluster.routing.ShardRouting.writeToThin(ShardRouting.java:294) org.elasticsearch.cluster.routing.IndexShardRoutingTable$Builder.writeToThin(IndexShardRoutingTable.java:834) org.elasticsearch.cluster.routing.IndexRoutingTable.writeTo(IndexRoutingTable.java:308) org.elasticsearch.cluster.routing.RoutingTable.writeTo(RoutingTable.java:360) org.elasticsearch.cluster.ClusterState.writeTo(ClusterState.java:742) org.elasticsearch.discovery.zen.PublishClusterStateAction.serializeFullClusterState(PublishClusterStateAction.java:355) org.elasticsearch.action.admin.cluster.state.TransportClusterStateAction.masterOperation(TransportClusterStateAction.java:136) org.elasticsearch.action.admin.cluster.state.TransportClusterStateAction.masterOperation(TransportClusterStateAction.java:44) org.elasticsearch.action.support.master.TransportMasterNodeAction.masterOperation(TransportMasterNodeAction.java:88) org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction$2.doRun(TransportMasterNodeAction.java:174) org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) org.elasticsearch.common.util.concurrent.EsExecutors$1.execute(EsExecutors.java:135) org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction.doStart(TransportMasterNodeAction.java:171) org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction.start(TransportMasterNodeAction.java:127) org.elasticsearch.action.support.master.TransportMasterNodeAction.doExecute(TransportMasterNodeAction.java:105) org.elasticsearch.action.support.master.TransportMasterNodeAction.doExecute(TransportMasterNodeAction.java:55) org.elasticsearch.action.support.TransportAction$RequestFilterChain.proceed(TransportAction.java:167) org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:139) org.elasticsearch.action.support.HandledTransportAction$TransportHandler.messageReceived(HandledTransportAction.java:79) org.elasticsearch.action.support.HandledTransportAction$TransportHandler.messageReceived(HandledTransportAction.java:69) org.elasticsearch.transport.RequestHandlerRegistry.processMessageReceived(RequestHandlerRegistry.java:66) org.elasticsearch.transport.TcpTransport$RequestHandler.doRun(TcpTransport.java:1592) org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) org.elasticsearch.common.util.concurrent.EsExecutors$1.execute(EsExecutors.java:135) org.elasticsearch.transport.TcpTransport.handleRequest(TcpTransport.java:1550) org.elasticsearch.transport.TcpTransport.messageReceived(TcpTransport.java:1414) org.elasticsearch.transport.netty4.Netty4MessageChannelHandler.channelRead(Netty4MessageChannelHandler.java:64) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:297) io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:413) io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:241) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1359) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:935) io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:134) io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:545) io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499) io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) java.lang.Thread.run(Thread.java:748) thx for any help ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 15, 2020, 7:52am UTC](https://discuss.elastic.co/t/high-cpu-percent-of-elasticsearch/228465/2 "2020-05-15T07:52:49Z")
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