java -agentlib:hprof[=options] ToBeProfiledClass java -Xrunprof[:options] ToBeProfiledClass javac -J-agentlib:hprof[=options] ToBeProfiledClass 完整的命令选项如下: Option Name and Value Description Default --- --- --- heap=dump|sites|all heap profiling all cpu=samples|times|old CPU us...
so:从内存交换到磁盘的交换页数量;bi:发送到块设备的块数;bo:从块设备接收到的块数;in:每秒中...
home接口是EJB工厂用于创建和移除查找EJB实例。 76、bean 实例的生命周期对于Stateless Session Bean、Entity Bean、Message Driven Bean一般存在缓冲池管理,而对于Entity Bean和Statefull Session Bean存在Cache管理,通常包含创建实例,设置上下文、创建EJB Object(create)、业务方法调用、remove等过程,对于存在缓冲池管理的Bea...
NonNMethodCodeHeapSize = 5839372uintx NonProfiledCodeHeapSize = 122909434intx NumberOfLoopInstrToAlign = 4intx ObjectAlignmentInBytes = 8 {size_t OldPLABSize = 1024size_t OldSize = 5452592bool OmitStackTraceInFastThrow = trueccstrlist OnError =ccstrlist OnOutOfMemoryError =intx OnStack...
可以发现,tcmalloc的泄露检测只能看到native栈,如想看到Java栈,可考虑配合使用arthas的profile命令,如下: # 获取调用inflateBytes时的调用栈 profiler execute 'start,event=Java_java_util_zip_Inflater_inflateBytes,alluser' # 获取调用malloc时的调用栈
profile from live objects only--lock duration lock profiling threshold in nanoseconds--total accumulate the total value (time, bytes, etc.)--all-user only include user-mode events--sched group threads by scheduling policy--cstack mode how to traverse C stack: fp|dwarf|lbr|no--begin function...
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: ...
峰值性能:AOT编译不像JIT编译一样能收集程序运行时的信息,因此也无法进行一些更激进的优化,例如基于类层次分析的完全虚方法内联,或者基于程序profile的投机性优化(不过这并非硬性限制,我们可以通过限制运行范围,或者利用上一次运行的程序profile来绕开这些限制)。 构建时长:从目前的实测数据看,像Graal编译器花的构建时间...
Full thread dump Java HotSpot(TM) Server VM (16.3-b01 mixed mode): 1. 2. 线程INFO信息块: 1. "Timer-0" daemon prio=10 tid=0xac190c00 nid=0xaef in Object.wait() [0xae77d000] # 线程名称:Timer-0;线程类型:daemon;优先级: 10,默认是5; ...
export HEAPPROFILE=/data1/weibo/logs/gperftools/tcmalloc/heap 1. 1. 修改后重启tomcat的容器。 2.5.1 关于LD_PRELOAD LD_PRELOAD是Linux系统的一个环境变量,它可以影响程序的运行时的链接(Runtime linker),它允许你定义在程序运行前优先加载的动态链接库。这个功能主要就是用来有选择性的载入不同动态链接库中...