# Elasticsearch high cpu usage **URL:** \ **Category:** Elasticsearch\ **Created:** [July 3, 2014, 2:21am UTC](https://discuss.elastic.co/t/elasticsearch-high-cpu-usage/18453 "2014-07-03T02:21:52Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![vincent\_park](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vincent_park/32/800_2.png) [@vincent\_park](https://discuss.elastic.co/u/vincent_park)\ **Post date:** [July 3, 2014, 2:21am UTC](https://discuss.elastic.co/t/elasticsearch-high-cpu-usage/18453/1 "2014-07-03T02:21:52Z")
Hi, I have 5 clustered nodes and each nodes have 1 replica. total document size is 216 M and 853,000 docs. I was suffering from very high CPU usage. every hours and every early morning about am 05:00 ~ am 09:00 you can see my cacti graph. [http://elasticsearch-users.115913.n3.nabble.com/file/n4059186/cpuhigh.jpg](http://elasticsearch-users.115913.n3.nabble.com/file/n4059186/cpuhigh.jpg) there is elasticsearch only on this server I thought there are something wrong with es process. but there is a few server request at cpu peak time. and there is no cron job even. $ ./elasticsearch -v _Version: 1.1.1, Build: f1585f0/2014-04-16T14:27:12Z, JVM: 1.7.0\_55_ $ java -version _java version "1.7.0\_55" Java(TM) SE Runtime Environment (build 1.7.0\_55-b13) Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)_ and I installed plugins on elasticsearch: _HQ, bigdesk, head, kopf, sense_ es log at cpu peak time: [2014-07-03 08:01:00,045][DEBUG][action.search.type] [node1] [search][4], node[GJjzCrLvQQ-ZRRoqL13MrQ], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@451f9e7c] lastShard [true] org.elasticsearch.common.util.concurrent.EsRejectedExecutionException: rejected execution (queue capacity 300) on org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction$4@68ab486b at org.elasticsearch.common.util.concurrent.EsAbortPolicy.rejectedExecution(EsAbortPolicy.java:62) at java.util.concurrent.ThreadPoolExecutor.reject(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.execute(Unknown Source) at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.onFirstPhaseResult(TransportSearchTypeAction.java:293) at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.onFirstPhaseResult(TransportSearchTypeAction.java:300) at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.start(TransportSearchTypeAction.java:190) at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:59) at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:49) at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63) at org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:108) at org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:43) at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:63) at org.elasticsearch.client.node.NodeClient.execute(NodeClient.java:92) at org.elasticsearch.client.support.AbstractClient.search(AbstractClient.java:212) at org.elasticsearch.rest.action.search.RestSearchAction.handleRequest(RestSearchAction.java:98) at org.elasticsearch.rest.RestController.executeHandler(RestController.java:159) at org.elasticsearch.rest.RestController.dispatchRequest(RestController.java:142) at org.elasticsearch.http.HttpServer.internalDispatchRequest(HttpServer.java:121) at org.elasticsearch.http.HttpServer$Dispatcher.dispatchRequest(HttpServer.java:83) at org.elasticsearch.http.netty.NettyHttpServerTransport.dispatchRequest(NettyHttpServerTransport.java:291) at org.elasticsearch.http.netty.HttpRequestHandler.messageReceived(HttpRequestHandler.java:43) at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) at org.elasticsearch.common.netty.handler.codec.http.HttpChunkAggregator.messageReceived(HttpChunkAggregator.java:145) at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296) at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:459) at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:536) at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435) at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:268) at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:255) at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89) at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) at org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) -- View this message in context: [http://elasticsearch-users.115913.n3.nabble.com/elasticsearch-high-cpu-usage-tp4059186.html](http://elasticsearch-users.115913.n3.nabble.com/elasticsearch-high-cpu-usage-tp4059186.html) Sent from the ElasticSearch Users mailing list archive at [Nabble.com](http://Nabble.com). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. 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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:18am UTC](https://discuss.elastic.co/t/elasticsearch-high-cpu-usage/18453/2 "2017-07-06T01:18:14Z")