importjava.lang.management.ManagementFactory;importjava.lang.management.MemoryMXBean;importjava.lang.management.MemoryUsage;importjava.util.HashSet;importjava.util.Set;publicclassMain{publicstaticvoidmain(String[]args){// 创建并构造集合Set<String>mySet=newHashSet<>();mySet.add("Apple");mySet.add("...
import java.lang.Runtime; public class TestDemo { public static void main(String[] args) { Runtime run = Runtime.getRuntime(); long maxMemory = run.maxMemory(); long totalMemory = run.totalMemory(); System.out.println("MAX_MEMORY = " + maxMemory + "B = " + (maxMemory / (double...
Free memory after count15000is 1MB map size:16000 ... Free memory after count43000is 0MB map size:44000 Free memory after count44000is 0MB map size:45000 Free memory after count45000is 0MB java.lang.OutOfMemoryError: GC overhead limit exceeded Dumping heap to java_pid2732.hprof ... Exc...
package com.seven.dbTools.DBTools; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.ArrayList; public class JdbcHandleMySQLBigResultSet { public static lon...
The default maximum Java heap size for the discovery_server and discovery_agent probes is set using the Raw Configure option.
Java堆空间溢出解决方法 Exception in thread "main" java.lang.OutOfMemoryError: Java heap space 2017-12-14 14:31 − 一般通过java -jar filename.jar运行jar包,但是当运行的java程序需要较大的内存时,可能会造成堆空间溢出。 例如,加载了几个G大小的json文件,运行报错: Exception in thread "main" ja...
odps.sql.udf.jvm.memory 设置UDF JVM Heap使用的最大内存。 某些UDF在内存计算、排序的数据量比较大时,会报内存溢出错误,这时候可以调大该参数,但该方法只能暂时缓解,您需要从业务上去优化UDF代码。 取值范围:256 MB~12288 MB。 默认值为1024 MB。 odps.function.timeout 设置UDF超时时间。 取值范围:0 s~360...
如果有java基础的同学,可以回顾下《再谈Java数据结构—分析底层实现与应用注意事项》:java把内存分两种:一种是栈内存,另一种是堆内存。基本类型(即int,short,long,byte,float,double,boolean,char)在栈区分配空间,所有的对象都在堆(Heap)中分配空间。按照这思路来谈下JavaScript。 最新的 ECMAScript 标准定义了 7...
odps.sql.udf.jvm.memory The maximum memory size of the Java Virtual Machine (JVM) heap for a user-defined function (UDF). If a large amount of data is calculated and sorted in the memory by using a UDF, the OOM error may occur. In this case, you can increase the value of this pr...
user configurable memory target: https://github.com/golang/proposal/blob/7f0d01687e030f21e8bdc36dfd9d5aac3a6f4a71/design/44309-user-configurable-memory-target.md [7] #48409: https://github.com/golang/go/issues/48409 [8] gotip: https://pkg.go.dev/golang.org/dl/gotip ...