我在Java 8中编写了一个服务器应用程序,并使用java 1.8.0u25运行它.
它在前几个小时工作正常,但在它获得大约5k~10k请求后,VM进程的一个线程使用其中一个CPU的100%.
所以我试图jstack让VM进程检查有问题的线程是什么,并且它表明线程(线程id是14303 = 0x37df)是"C2 CompilerThread0":
"C2 CompilerThread0" #6 daemon prio=9 os_prio=0 tid=0x00002aaabc12a000 nid=0x37df runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
并且jstack -m,线程的堆栈跟踪如下:
----------------- 14303 -----------------
0x00002b99b67693c3 _ZN16PhaseMacroExpand27process_users_of_allocationEP8CallNode + 0x2a3
0x00002b99b676ec3b _ZN16PhaseMacroExpand23eliminate_allocate_nodeEP12AllocateNode + 0x1cb
0x00002b99b676ee65 _ZN16PhaseMacroExpand21eliminate_macro_nodesEv + 0x1a5
0x00002b99b6772769 _ZN16PhaseMacroExpand18expand_macro_nodesEv + 0x19
0x00002b99b640b01b _ZN7Compile8OptimizeEv + 0xa6b
0x00002b99b640c53c _ZN7CompileC1EP5ciEnvP10C2CompilerP8ciMethodibbb + 0x13bc
0x00002b99b635f9c8 _ZN10C2Compiler14compile_methodEP5ciEnvP8ciMethodi + 0x198
0x00002b99b6414c6a _ZN13CompileBroker25invoke_compiler_on_methodEP11CompileTask + 0xc8a
0x00002b99b6417650 _ZN13CompileBroker20compiler_thread_loopEv + 0x620
0x00002b99b69a2e8f _ZN10JavaThread17thread_main_innerEv + 0xdf
0x00002b99b69a2fbc _ZN10JavaThread3runEv + 0x11c
0x00002b99b6860d48 _ZL10java_startP6Thread + 0x108
每一次我尝试一次jstack -m …