获取已采集的sample的数量 代码语言:java AI代码解释 $ profiler getSamples23 查看profiler状态(可以查看当前profiler在采样哪种event和采样时间。) 代码语言:java AI代码解释 $ profiler status[cpu]profiling is runningfor4seconds 停止profiler,并同步生成文件(默认
profiler getSamples 获取已采集的sample的数量 profiler status 查看profiler的状态,运行的时间 profiler stop 停止profiler,生成火焰图的结果,指定输出目录和输出格式:svg或html 启动profiler,默认情况下,生成的是 cpu 的火焰图,即 event 为cpu。可以用--event参数指定其他性能分析模式,见下文。 $ profiler start Start...
获取已采集的sample的数量 $profiler getSamples23 查看profiler状态(可以查看当前profiler在采样哪种event和采样时间。) $ profiler status [cpu] profilingisrunningfor4seconds 停止profiler,并同步生成文件(默认在工作目录下的arthas-output目录。) $ profiler stop profiler outputfile:/tmp/demo/arthas-output/2024091...
获取已采集的sample的数量 $profiler getSamples23 查看profiler状态(可以查看当前profiler在采样哪种event和采样时间。) $ profiler status[cpu]profilingisrunningfor4seconds 停止profiler,并同步生成文件(默认在工作目录下的arthas-output目录。) $ profilerstopprofileroutputfile: /tmp/demo/arthas-output/20240919-1551...
jdk.ExecutionSample jdk.ObjectAllocationInNewTLAB (alloc) jdk.ObjectAllocationOutsideTLAB (alloc) jdk.JavaMonitorEnter (lock) jdk.ThreadPark (lock) 要开始一起分析cpu + allocations + locks ,命令如下:bash 复制代码 asprof -e cpu,alloc,lock -f profile.jfr ... 或使用 --alloc 和 --lock 参数以...
获取已采集的sample的数量 $ profiler getSamples 23 1. 2. 查看profiler状态(可以查看当前profiler在采样哪种event和采样时间。) $ profiler status [cpu] profiling is running for 4 seconds 1. 2. 停止profiler,并同步生成文件(默认在工作目录下的arthas-output目录。) ...
第二个标签是调用树(Call Tree),展示了在每个方法中子方法的耗时占比(严格的说是CPU sample占比): Call Tree 通常而言,分析这些信息就可以找到很多性能问题。如果有特殊的需求,例如改变采样率、生成差分图(Differential Flame Graph),还是命令行更方便一点。编辑...
Async-profilercollects sample stack traces of Java methods, including JVM code, native class, and kernel functions, when profiling CPU. Let’s profile our application using its PID: Here, we’ve defined thecpuprofiling event by using the-eoption. Then, we used the-d<duration>option to collec...
-e walloption tells async-profiler to sample all threads equally every given period of time regardless of thread status: Running, Sleeping or Blocked. For instance, this can be helpful when profiling application start-up time. Wall-clock profiler is most useful in per-thread mode:-t. ...
collapsed- dump collapsed call traces in the format used byFlameGraphscript. This is a collection of call stacks, where each line is a semicolon separated list of frames followed by the sample count. For example: java/lang/Thread.run;Primes$1.run;Primes.access$000;Primes.primesThread;Primes...