Heap size 的大小是Young Generation 和Tenured Generaion 之和。 提示:在JVM中如果98%的时间是用于GC且可用的Heap size 不足2%的时候将抛出此异常信息。 提示:Heap Size 最大不要超过可用物理内存的80%,一般的要将-Xms和-Xmx选项设置为相同,而-Xmn为1/4的-Xmx值。 解决方法:手动设置Heap size 修改TOMCAT_H...
-Xms<size> set initial Java heap size -Xmx<size> set maximum Java heap size -Xss<size> set java thread stack size -Xprof output cpu profiling data -Xfuture enable strictest checks, anticipating future default -Xrs reduce use of OS signals by Java/VM (see documentation) -Xcheckjni perform...
CommandLine flags: -XX:InitialHeapSize=131843840 -XX:MaxHeapSize=2109501440 -XX:+PrintGC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:-UseLargePagesIndividualAllocation -XX:+UseParallelGC {Heap before GC invocations=1 (...
In this quick tutorial, we’re going to get familiar with a few different ways to get the heap size of a running Java application. 2. jcmd To find the heap and metaspace related info of a running Java application, we can use the jcmd command-line utility: jcmd GC.heap_info First, ...
As a test I ran "java -Xmx1024m -version" from the command line and it fails too. If I run "java -Xmx512m -version" it succeeds. It's almost as if I can't set the max heap size to anything above 700MB. How to I get it to 1GB so the java app we require launches?
CommandLine flags: -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=heap.hprof -XX:InitialHeapSize=268435456 -XX:MaxHeapSize=536870912 -XX:+PrintGC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+UseCompressedClassPointers -XX:+UseCompressedOops ...
U pthread_attr_setstacksize@@GLIBC_2.2.5 U pthread_create@@GLIBC_2.2.5 U pthread_join@@GLIBC_2.2.5 U putchar@@GLIBC_2.2.5 U putenv@@GLIBC_2.2.5 U puts@@GLIBC_2.2.5 U readdir@@GLIBC_2.2.5 U read@@GLIBC_2.2.5 000000000000b134 t ReadKnownVMs ...
-XX:MaxPermSize -XX:PermSize -XX:NewSize -XX:MaxNewSize -XX:SurvivorRatio -XX:MaxTenuringThreshold 5用于检查的JVM打印选项 JVM还提供了一些打印方法，允许您查看Java运行时的状态。有用的JVM打印选项包括：-XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintHeapAtGC -XX:+PrintCommandLineFlags -XX:+...
ActiveProcessorCount=8# 设置JVM使用的CPU核数限制为8-XX:+HeapDumpOnOutOfMemoryError# 当JVM发生OOM时,自动生成DUMP文件-XX:HeapDumpPath=heapdump.hprof# DUMP文件路径-XX:+PrintCommandLineFlags# 监控开启-Xlog:gc=info:file=portal_gc.log:utctime,level,tags:filecount=50,filesize=100M# Xlog:指定日志...
JavaHotSpot(TM)64-Bit ServerVM(25.212-b10)forwindows-amd64JRE(1.8.0_212-b10),built on Apr1201922:50:23by"java_re"withMSVC++10.0(VS2010)Memory:4k page,physical16633820k(5238816k free),swap25449536k(5187744k free)CommandLine flags:-XX:InitialHeapSize=536870912-XX:MaxHeapSize=536870912-XX:+...