>>> 13193.635 / 100818.0 0.13086586720625284 平均GC STW时间130ms, 你配置的是-XX:MaxGCPauseMillis=100, 对于G1GC这个不是绝对保证, 所以还算正常
<ww112...@sina.com> 于2020年5月27日周三 下午9:27写道： > rs的配置如下： > hbase版本：1.2.0 > jvm:1.8.0_172 > gc : g1 > heap : -Xms120g -Xmx120g > > rs进程如下： > /usr/java/latest/bin/java -Dproc_regionserver -XX:OnOutOfMemoryError=kill > -9 %p -Djava.net.preferIPv4Stack=true -Xms16106127360 -Xmx16106127360 > -XX:+UseG1GC -Xms120g -Xmx120g -XX:+UnlockExperimentalVMOptions > -XX:G1NewSizePercent=1 -XX:MaxGCPauseMillis=100 -verbose:gc > -XX:+PrintGCDetails -XX:+PrintGCDateStamps > -Xloggc:/var/log/hbase/hbase-gc.log -XX:+UseGCLogFileRotation > -XX:NumberOfGCLogFiles=4 -XX:GCLogFileSize=512M > -XX:+PrintGCApplicationStoppedTime -XX:+PrintGCApplicationConcurrentTime > -XX:InitiatingHeapOccupancyPercent=70 -Djute.maxbuffer=41943040 > -XX:+HeapDumpOnOutOfMemoryError > -XX:HeapDumpPath=/tmp/hbase2_hbase2-REGIONSERVER-f972621f41cb4c66f7520eb42f0bccca_pid189753.hprof > -XX:OnOutOfMemoryError=/opt/cloudera/cm-agent/service/common/killparent.sh > -Dhbase.log.dir=/var/log/hbase > -Dhbase.log.file=hbase-cmf-hbase2-REGIONSERVER-hbase-common-10.bigdata.lf.hw.lan.log.out > -Dhbase.home.dir=/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hbase > -Dhbase.id.str= -Dhbase.root.logger=INFO,RFA > -Djava.library.path=/opt/cloudera/parcels/GPLEXTRAS-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop/lib/native:/opt/cloudera/parcels/GPLEXTRAS-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop/lib/native:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hadoop/lib/native:/opt/cloudera/parcels/CDH-5.14.2-1.cdh5.14.2.p0.3/lib/hbase/lib/native/Linux-amd64-64 > -Dhbase.security.logger=INFO,RFAS > org.apache.hadoop.hbase.regionserver.HRegionServer start > > 通过火焰图查看，gc的占用了很大一部分。 > > 通过jstat -gcutil看gc频次和gc耗时看不出什么问题。截取一部分日志： > 0.00 100.00 71.43 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 72.35 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 73.27 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 74.19 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 75.12 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 76.04 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 76.96 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 77.88 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 78.80 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 79.72 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 81.11 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 82.49 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 83.87 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 84.79 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 85.71 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 87.10 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 88.48 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 89.40 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 90.78 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 92.17 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 93.09 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 94.01 54.50 98.70 - 100818 13193.635 0 0.000 > 13193.635 > 0.00 100.00 1.56 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 1.95 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 3.12 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 3.91 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 5.08 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 5.86 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 7.03 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 7.42 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 8.20 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 8.98 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 9.77 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 10.16 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 11.33 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > 0.00 100.00 12.50 55.13 98.70 - 100819 13193.718 0 0.000 > 13193.718 > > >
