我正面临着Elasticsearch的一个问题，我看到它在我的服务器中占用了176％的CPU，所以我想知道这是这个版本中的错误还是堆栈本身。它不是在中间发生，但在两个小时之后，我看到CPU使用率上的这些峰值，有时会因负载而导致服务器无响应。
是否还有人面临这个问题？
我的java版本是
$~# java -version
java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)
我更新了Elasticsearch中的配置，以便消耗更少的CPU和内存。现在我的elasticsearch.yml配置就像这样
indices.fieldata.cache.size: "30%"
indices.breaker.fielddata.limit: "80%"
indices.breaker.request.limit: "50%"
indices.breaker.total.limit: "90%"
bootstrap.mlockall: true
index.merge.scheduler.max_thread_count: 1
indices.store.throttle.type: none
然而，我仍然看到Elasticsearch的CPU使用高峰，当kibana刷新仪表板时，我已经识别出它们的出现，我可以看到> 100％（107,165 ......）的峰值。奇怪的是内存使用情况，净I / O和块I / O似乎保持稳定，而CPU峰值
对此有何建议或想法？
提前谢谢你，
问候！
我用顶部录制的日志来搜索CPU峰值
root @ g：〜＃cat cpu-log.txt | grep colord
6.9 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.8 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.8 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.8 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.7 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.7 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.6 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.6 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.6 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.6 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.6 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.5 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.5 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.5 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
6.5 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
7.3 389 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
83.5 5864 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch - cp /usr/share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
57.5 5864 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX ：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp / usr /share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
110 6949 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF- 8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch -cp /usr/share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
86.6 8100 colord / usr / lib / jvm / java-8-openjdk-amd64 / jre / bin / java -Xms256m -Xmx1g -Djava.awt.headless = true -XX：+ UseParNewGC -XX：+ UseConcMarkSweepGC -XX：CMSInitiatingOccupancyFraction = 75 -XX：+ UseCMSInitiatingOccupancyOnly -XX：+ HeapDumpOnOutOfMemoryError -XX：+ DisableExplicitGC -Dfile.encoding = UTF-8 -Djna.nosys = true -Des.path.home = / usr / share / elasticsearch - cp /usr/share/elasticsearch/lib/elasticsearch-2.3.5.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -Des.network.host = 0.0.0.0
答案 0 :(得分：0)
调试CPU使用率并不是一项简单的任务，需要更多信息来确定导致这些峰值的原因，例如集群大小，数据量，分片和副本数量，索引映射和还有您可视化的仪表板的属性。
通常，在Elasticsearch上查询和聚合时，应该看到CPU使用量增加，增加的程度取决于我上面列出的信息。
作为一个起点，我建议您按照此production guide进行Elasticsearch，因为我发现您在某些默认设置下运行，而且您可能还想先使用Chrome网络工具重新加载仪表板可以查看发送到Elasticsearch的网络请求，运行对/_msearch请求的所有响应，并检查每个查询的took值，这样可以让您了解ES可能出现的大量查询挣扎着。