https://confluence.atlassian.com/adminjiraserver/performance-and-scale-testing-965568707.html
Performance and scale testing
我看了一下, 我好流口水：
我一台1.4万的Dell R730XD 二手，留了8G内存给jira，又不是SSD硬盘。咋办呢，不是土豪还想用土豪的速度。
调优呗，上手段，别问，问了就是。。。。
setenv.sh 改动： 增加内存，增加性能监视代理 ## The following 2 settings control the minimum and maximum given to the JIRA Java virtual machine.??In larger JIRA instances, the maximum amount will need to be increased. # #JVM_MINIMUM_MEMORY="384m" #JVM_MAXIMUM_MEMORY=“2048m" ?#modified by Rock on 2020.03.09? JVM_MINIMUM_MEMORY="768m" JVM_MAXIMUM_MEMORY=“3072m” ## The following setting configures the size of JVM code cache.??A high value of reserved size allows Jira to work with more installed apps. #? #JVM_CODE_CACHE_ARGS='-XX:InitialCodeCacheSize=32m -XX:ReservedCodeCacheSize=512m’? #modified by Rock on 2020.03.09? JVM_CODE_CACHE_ARGS='-XX:InitialCodeCacheSize=96m -XX:ReservedCodeCacheSize=1280m' #----------------------------------------- # Prevents the JVM from suppressing stack traces if a given type of exception # occurs frequently, which could make it harder for support to diagnose a problem.? #-----------------------------------------? JVM_EXTRA_ARGS="-XX:-OmitStackTraceInFastThrow -Djava.locale.providers=COMPAT -javaagent:/root/tingyun/tingyun/tingyun-agent-java.jar”
用了听云的APM
接着升级java 8 到java 11
安装openjdk 11 yum search openjdk yum install java-11-openjdk.x86_64 查找jdk路径 [root@CEN07_JIRA bin]# echo $JAVA_HOME /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64 [root@CEN07_JIRA jvm]# ll total 0 lrwxrwxrwx. 1 root root 26 Jan 23 00:22 java -> /etc/alternatives/java_sdk drwxr-xr-x. 6 root root 68 Mar??9 18:11 java-11-openjdk-11.0.6.10-1.el7_7.x86_64 lrwxrwxrwx. 1 root root 32 Jan 23 00:22 java-1.8.0 -> /etc/alternatives/java_sdk_1.8.0 lrwxrwxrwx. 1 root root 40 Jan 23 00:22 java-1.8.0-openjdk -> /etc/alternatives/java_sdk_1.8.0_openjdk drwxr-xr-x. 7 root root 68 Jan 23 00:22 java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64 lrwxrwxrwx. 1 root root 34 Jan 23 00:22 java-openjdk -> /etc/alternatives/java_sdk_openjdk lrwxrwxrwx. 1 root root 21 Mar??9 18:11 jre -> /etc/alternatives/jre lrwxrwxrwx. 1 root root 24 Mar??9 18:11 jre-11 -> /etc/alternatives/jre_11 lrwxrwxrwx. 1 root root 32 Mar??9 18:11 jre-11-openjdk -> /etc/alternatives/jre_11_openjdk lrwxrwxrwx. 1 root root 40 Mar??9 18:11 jre-11-openjdk-11.0.6.10-1.el7_7.x86_64 -> java-11-openjdk-11.0.6.10-1.el7_7.x86_64 lrwxrwxrwx. 1 root root 27 Jan 23 00:22 jre-1.8.0 -> /etc/alternatives/jre_1.8.0 lrwxrwxrwx. 1 root root 35 Jan 23 00:22 jre-1.8.0-openjdk -> /etc/alternatives/jre_1.8.0_openjdk lrwxrwxrwx. 1 root root 51 Jan 23 00:22 jre-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64 -> java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64/jre lrwxrwxrwx. 1 root root 29 Mar??9 18:11 jre-openjdk -> /etc/alternatives/jre_openjdk 替换jre-8 成为jre-11 setenv.sh # DO NOT remove the following line #JAVA_HOME="/opt/atlassian/jira/jre/"; export JAVA_HOME #Modified by Rock on 2020.03.09 - change jre to jre 11 :) JAVA_HOME="/usr/lib/jvm/jre-11"; export JAVA_HOME
重启，试试。
对了忘记说了结果如何？
结果是感人的，其实，我发现了如果把虚拟机的CPU调到8
你会发现jira飞起来了，
太晚了，就做对比了。
总结一个就苟了，
- - 增加内存，似乎影响不大
- - 增加CPU，提升很大
- - 增加磁盘速度，貌似提升很大 - 注意到磁盘使用很高情况，
更新一下： 2020.05.02， 貌似升级jdk11反而影响性能，我重新退回到jdk8，速度提升很多。