wordpress 建站服务,wordpress浏览人数,应用商店软件大全,企业网站的目的jinfo介绍
jinfo 是一个命令行工具#xff0c;用于查看和修改 Java 虚拟机#xff08;JVM#xff09;的配置参数。它通常用于调试和性能调优。
使用 jinfo 命令#xff0c;你可以查看当前 JVM 的配置参数#xff0c;包括堆大小、线程数、垃圾回收器类型等。此外#xf…jinfo介绍
jinfo 是一个命令行工具用于查看和修改 Java 虚拟机JVM的配置参数。它通常用于调试和性能调优。
使用 jinfo 命令你可以查看当前 JVM 的配置参数包括堆大小、线程数、垃圾回收器类型等。此外你还可以使用 jinfo 命令来修改 JVM 的配置参数例如增加堆大小、更改垃圾回收器类型等。 jinfo 命令通常与 jps 和 jstack 等其他 JVM 调试工具一起使用以帮助你更好地理解和优化 Java 应用程序的性能。 语法
jinfo [option] pid
参数介绍
输入命令jinfo -h -flag name查询某个标志Flag是否启用或其值。-flag [|-]name启用或禁用某个标志仅限支持动态更改的标志。-flags显示所有标志及其值。-sysprops显示Java系统属性。
常用命令
jinfo pid 查询某个标志Flag是否启用或其值
jinfo -flag FlagName pid
示例
查询Java进程pid为7813是否启用了UseConcMarkSweepGC垃圾收集器
jinfo -flag UseConcMarkSweepGC 7813动态修改支持的标志
如果该标志支持运行时修改的话
jinfo -flag [|-]FlagName pid
示例1
启用Java进程pid为7813的PrintGCDetails选项以输出详细的GC日志
jinfo -flag PrintGCDetails 7813 示例2
禁用Java进程pid为7813的PrintGCDetails选项以输出详细的GC日志
jinfo -flag -PrintGCDetails 7813显示所有标志及其值
jinfo -flags pid 显示Java系统属性
jinfo -sysprops pid 附件jinfo返回信息
Attaching to process ID 4200, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.321-b07
Java System Properties:java.vendor Oracle Corporation
spring.sleuth.sampler.percentage 1.0
sun.java.launcher SUN_STANDARD
service.version 2.5.0.RELEASE
sun.management.compiler HotSpot 64-Bit Tiered Compilers
sun.nio.ch.bugLevel
os.name Linux
sun.boot.class.path /usr/local/java/jdk1.8.0_321/jre/lib/resources.jar:/usr/local/java/jdk1.8.0_321/jre/lib/rt.jar:/usr/local/java/jdk1.8.0_321/jre/lib/sunrsasign.jar:/usr/local/java/jdk1.8.0_321/jre/lib/jsse.jar:/usr/local/java/jdk1.8.0_321/jre/lib/jce.jar:/usr/local/java/jdk1.8.0_321/jre/lib/charsets.jar:/usr/local/java/jdk1.8.0_321/jre/lib/jfr.jar:/usr/local/java/jdk1.8.0_321/jre/classes
yang.env test2
java.vm.specification.vendor Oracle Corporation
java.runtime.version 1.8.0_321-b07
user.name root
yang.dev-mode true
user.language zh
sun.boot.library.path /usr/local/java/jdk1.8.0_321/jre/lib/amd64
info.version 2.5.0.RELEASE
nacos.logging.path /root/logs/nacos
info.desc data-screen
PID 4200
java.version 1.8.0_321
user.timezone Asia/Shanghai
spring.cloud.nacos.config.file-extension yaml
sun.arch.data.model 64
java.endorsed.dirs /usr/local/java/jdk1.8.0_321/jre/lib/endorsed
sun.cpu.isalist
sun.jnu.encoding UTF-8
file.encoding.pkg sun.io
file.separator /
java.specification.name Java Platform API Specification
java.class.version 52.0
csp.sentinel.api.port 8719
user.country CN
java.home /usr/local/java/jdk1.8.0_321/jre
spring.cloud.nacos.discovery.server-addr nacos.jl.com:8848
spring.cloud.alibaba.seata.tx-service-group data-screen-group
java.vm.info mixed mode
os.version 3.10.0-1160.el7.x86_64
path.separator :
java.vm.version 25.321-b07
http.maxRedirects 5
java.protocol.handler.pkgs org.springframework.boot.loader
spring.cloud.nacos.config.server-addr nacos.yang.com:8848
java.awt.printerjob sun.print.PSPrinterJob
spring.cloud.nacos.discovery.namespace
sun.io.unicode.encoding UnicodeLittle
awt.toolkit sun.awt.X11.XToolkit
user.home /root
yang.name data-screen
java.specification.vendor Oracle Corporation
java.library.path /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
java.vendor.url http://java.oracle.com/
spring.beaninfo.ignore true
logging.config classpath:log/logback-test2.xml
java.vm.vendor Oracle Corporation
java.runtime.name Java(TM) SE Runtime Environment
sun.java.command data-screen.jar --spring.profiles.activetest2
java.class.path data-screen.jar
project.name data-screen
yang.is-local false
java.vm.specification.name Java Virtual Machine Specification
spring.cloud.nacos.config.shared-dataids yang.yaml,test2.yaml
java.vm.specification.version 1.8
sun.cpu.endian little
sun.os.patch.level unknown
java.awt.headless true
java.io.tmpdir /tmp
java.vendor.url.bug http://bugreport.sun.com/bugreport/
spring.main.allow-bean-definition-overriding true
os.arch amd64
java.awt.graphicsenv sun.awt.X11GraphicsEnvironment
java.ext.dirs /usr/local/java/jdk1.8.0_321/jre/lib/ext:/usr/java/packages/lib/ext
appId data-screen
user.dir /workspace/java/screen
spring.application.name data-screen
spring.profiles.active test2
line.separator java.vm.name Java HotSpot(TM) 64-Bit Server VM
file.encoding UTF-8
csp.sentinel.charset UTF-8
csp.sentinel.flow.cold.factor 3
java.specification.version 1.8VM Flags:
Non-default VM flags: -XX:CICompilerCount3 -XX:InitialHeapSize130023424 -XX:MaxHeapSize2051014656 -XX:MaxNewSize683671552 -XX:MinHeapDeltaBytes524288 -XX:NewSize42991616 -XX:OldSize87031808 -XX:UseCompressedClassPointers -XX:UseCompressedOops -XX:UseFastUnorderedTimeStamps -XX:UseParallelGC
Command line:
