JVM 调优参数实战

来源：互联网发布：淘宝店铺装修模板制作编辑：程序博客网时间：2024/06/08 13:57

-Xms5120m -Xmx5120m -Xmn1700m -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:MaxTenuringThreshold=5-XX:+ExplicitGCInvokesConcurrent -XX:MaxMetaspaceSize=576m -Djava.security.enableCRLDP=true -Dcom.sun.security.enableCRLDP=true -Djdk.tls.ephemeralDHKeySize=matched -Dlogback.configurationFile=/opt/polycom/cma/current/jserver/config/logback.xml -Dnet.sf.ehcache.skipUpdateCheck=true -Xdebug -Xnoagent -agentlib:jdwp=transport=dt_socket,address=8787,server=y,suspend=n -Djavax.xml.parsers.DocumentBuilderFactory=com.polycom.rpp.xml_parser.DomBuilderFactoryImpl -Djavax.xml.parsers.SAXParserFactory=com.polycom.rpp.xml_parser.SAXParserFactoryImpl -Djava.protocol.handler.pkgs=com.polycom.rpum.core.shared.nodeps.protocol -Djcifs.smb.lmCompatibility=0 -Djcifs.smb.client.useExtendedSecurity=false -agentpath:/opt/polycom/cma/current/jserver/lib/proximo_drop_priv_agent.so -Dorg.apache.cxf.Logger=org.apache.cxf.common.logging.Slf4jLogger -classpath /opt/polycom/cma/current/jboss/bin/run.jar:/

查看线程数：

1. cat /proc/进程id/status

[plcm@rpumdev deviceTypes]$ cat /proc/14149/status
Name: java
State: S (sleeping)
Tgid: 14149
Pid: 14149
PPid: 14050
TracerPid: 0
Uid: 500 500 0 500
Gid: 500 500 500 500
Utrace: 0
FDSize: 1024
Groups: 500
VmPeak: 9702780 kB
VmSize: 9639704 kB
VmLck: 0 kB
VmHWM: 2922040 kB
VmRSS: 2919608 kB
VmData: 9420540 kB
VmStk: 88 kB
VmExe: 4 kB
VmLib: 22680 kB
VmPTE: 6752 kB
VmSwap: 0 kB
Threads: 351
SigQ: 0/127429
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000001002
SigCgt: 2000000181004ccd
CapInh: 0000000000000000
CapPrm: ffffffffffffffff
CapEff: 0000000000000000
CapBnd: ffffffffffffffff
Cpus_allowed: f
Cpus_allowed_list: 0-3
Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
Mems_allowed_list: 0
voluntary_ctxt_switches: 4
nonvoluntary_ctxt_switches: 1

2. PS 命令

[plcm@rpumdev deviceTypes]$ ps -T -p 13129|wc -l

352

QA lab

[root@RM-83 ~]# ps -T -p 14391 |wc
799 3995 27964

connection type？？？

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