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add perfcounter command. #1029
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hengyunabc
parent
4e771e2a7d
commit
f5f7583c98
@ -34,6 +34,7 @@ import com.taobao.arthas.core.command.monitor200.HeapDumpCommand;
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import com.taobao.arthas.core.command.monitor200.JvmCommand;
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import com.taobao.arthas.core.command.monitor200.MBeanCommand;
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import com.taobao.arthas.core.command.monitor200.MonitorCommand;
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import com.taobao.arthas.core.command.monitor200.PerfCounterCommand;
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import com.taobao.arthas.core.command.monitor200.ProfilerCommand;
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import com.taobao.arthas.core.command.monitor200.StackCommand;
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import com.taobao.arthas.core.command.monitor200.ThreadCommand;
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@ -78,6 +79,7 @@ public class BuiltinCommandPack implements CommandResolver {
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commands.add(Command.create(WatchCommand.class));
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commands.add(Command.create(TimeTunnelCommand.class));
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commands.add(Command.create(JvmCommand.class));
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commands.add(Command.create(PerfCounterCommand.class));
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// commands.add(Command.create(GroovyScriptCommand.class));
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commands.add(Command.create(OgnlCommand.class));
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commands.add(Command.create(MemoryCompilerCommand.class));
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@ -0,0 +1,120 @@
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package com.taobao.arthas.core.command.monitor200;
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import static com.taobao.text.ui.Element.label;
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import java.lang.reflect.Method;
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import java.nio.ByteBuffer;
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import java.util.Collections;
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import java.util.List;
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import com.taobao.arthas.common.JavaVersionUtils;
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import com.taobao.arthas.common.PidUtils;
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import com.taobao.arthas.core.command.Constants;
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import com.taobao.arthas.core.shell.command.AnnotatedCommand;
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import com.taobao.arthas.core.shell.command.CommandProcess;
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import com.taobao.arthas.core.util.LogUtil;
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import com.taobao.middleware.cli.annotations.Description;
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import com.taobao.middleware.cli.annotations.Name;
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import com.taobao.middleware.cli.annotations.Option;
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import com.taobao.middleware.cli.annotations.Summary;
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import com.taobao.middleware.logger.Logger;
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import com.taobao.text.Decoration;
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import com.taobao.text.ui.TableElement;
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import com.taobao.text.util.RenderUtil;
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import sun.management.counter.Counter;
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import sun.management.counter.perf.PerfInstrumentation;
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/**
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* @see sun.misc.Perf
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* @see sun.management.counter.perf.PerfInstrumentation
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* @author hengyunabc 2020-02-16
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*/
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@Name("perfcounter")
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@Summary("Display the perf counter infornation.")
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@Description(Constants.WIKI + Constants.WIKI_HOME + "perf")
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public class PerfCounterCommand extends AnnotatedCommand {
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private static final Logger logger = LogUtil.getArthasLogger();
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private static Object perfObject;
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private static Method attachMethod;
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private boolean details;
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@Option(shortName = "d", longName = "details", flag = true)
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@Description("print all perf counter details")
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public void setDetails(boolean details) {
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this.details = details;
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}
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@Override
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public void process(CommandProcess process) {
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try {
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TableElement table = new TableElement().leftCellPadding(1).rightCellPadding(1);
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if (this.details) {
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table = new TableElement(3, 1, 1, 10).leftCellPadding(1).rightCellPadding(1);
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table.row(true, label("Name").style(Decoration.bold.bold()),
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label("Variability").style(Decoration.bold.bold()),
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label("Units").style(Decoration.bold.bold()), label("Value").style(Decoration.bold.bold()));
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}
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List<Counter> perfCounters = getPerfCounters();
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if (perfCounters.isEmpty()) {
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process.write(
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"please check arthas log. if java version >=9 , try to add jvm options when start your process: "
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+ "--add-opens java.base/jdk.internal.perf=ALL-UNNAMED "
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+ "--add-exports java.base/jdk.internal.perf=ALL-UNNAMED\n");
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} else {
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for (Counter counter : perfCounters) {
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if (details) {
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table.row(counter.getName(), String.valueOf(counter.getVariability()),
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String.valueOf(counter.getUnits()), String.valueOf(counter.getValue()));
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} else {
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table.row(counter.getName(), String.valueOf(counter.getValue()));
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}
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}
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}
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process.write(RenderUtil.render(table, process.width()));
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} finally {
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process.end();
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}
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}
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private static List<Counter> getPerfCounters() {
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/**
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* <pre>
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* Perf p = Perf.getPerf();
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* ByteBuffer buffer = p.attach(pid, "r");
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* </pre>
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*/
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try {
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if (perfObject == null) {
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// jdk8
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String perfClassName = "sun.misc.Perf";
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// jdk 11
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if (!JavaVersionUtils.isLessThanJava9()) {
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perfClassName = "jdk.internal.perf.Perf";
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}
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Class<?> perfClass = ClassLoader.getSystemClassLoader().loadClass(perfClassName);
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Method getPerfMethod = perfClass.getDeclaredMethod("getPerf");
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perfObject = getPerfMethod.invoke(null);
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}
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if (attachMethod == null) {
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attachMethod = perfObject.getClass().getDeclaredMethod("attach",
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new Class<?>[] { int.class, String.class });
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}
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ByteBuffer buffer = (ByteBuffer) attachMethod.invoke(perfObject,
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new Object[] { (int) PidUtils.currentLongPid(), "r" });
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PerfInstrumentation perfInstrumentation = new PerfInstrumentation(buffer);
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return perfInstrumentation.getAllCounters();
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} catch (Throwable e) {
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logger.error("arthas", "get perf counter error", e);
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}
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return Collections.emptyList();
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}
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}
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@ -27,6 +27,7 @@
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* [sysprop](sysprop.md)——查看和修改JVM的系统属性
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* [sysenv](sysenv.md)——查看JVM的环境变量
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* [vmoption](vmoption.md)——查看和修改JVM里诊断相关的option
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* [perfcounter](perfcounter.md)——查看当前 JVM 的Perf Counter信息
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* [logger](logger.md)——查看和修改logger
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* [getstatic](getstatic.md)——查看类的静态属性
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* [ognl](ognl.md)——执行ognl表达式
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@ -7,6 +7,7 @@
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* [sysprop](sysprop.md)
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* [sysenv](sysenv.md)
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* [vmoption](vmoption.md)
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* [perfcounter](perfcounter.md)
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* [logger](logger.md)
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* [mbean](mbean.md)
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* [getstatic](getstatic.md)
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@ -25,6 +25,7 @@ Advanced Usage
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* [sysprop](sysprop.md) - view/modify system properties
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* [sysenv](sysenv.md) — view system environment variables
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* [vmoption](vmoption.md) - view/modify the vm diagnostic options.
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* [perfcounter](perfcounter.md) - show JVM Perf Counter information
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* [logger](logger.md) - print the logger information, update the logger level
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* [getstatic](getstatic.md) - examine class's static properties
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* [ognl](ognl.md) - execute ongl expression
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@ -7,6 +7,7 @@ All Commands
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* [sysprop](sysprop.md)
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* [sysenv](sysenv.md)
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* [vmoption](vmoption.md)
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* [perfcounter](perfcounter.md)
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* [logger](logger.md)
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* [mbean](mbean.md)
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* [getstatic](getstatic.md)
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40
site/src/site/sphinx/en/perfcounter.md
Normal file
40
site/src/site/sphinx/en/perfcounter.md
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@ -0,0 +1,40 @@
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perfcounter
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===
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> Check the current JVM Perf Counter information.
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### Usage
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```
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$ perfcounter
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java.ci.totalTime 2325637411
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java.cls.loadedClasses 3403
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java.cls.sharedLoadedClasses 0
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java.cls.sharedUnloadedClasses 0
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java.cls.unloadedClasses 0
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java.property.java.version 11.0.4
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java.property.java.vm.info mixed mode
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java.property.java.vm.name OpenJDK 64-Bit Server VM
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...
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```
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Print more information with the `-d` option:
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```
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$ perfcounter -d
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Name Variability Units Value
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---------------------------------------------------------------------------------
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java.ci.totalTime Monotonic Ticks 3242526906
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java.cls.loadedClasses Monotonic Events 3404
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java.cls.sharedLoadedClasses Monotonic Events 0
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java.cls.sharedUnloadedClasses Monotonic Events 0
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java.cls.unloadedClasses Monotonic Events 0
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```
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### JVM above JDK9
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If the information is not printed, when the application starts, add the following parameters:
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```
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--add-opens java.base/jdk.internal.perf=ALL-UNNAMED --add-exports java.base/jdk.internal.perf=ALL-UNNAMED
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```
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40
site/src/site/sphinx/perfcounter.md
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40
site/src/site/sphinx/perfcounter.md
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perfcounter
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===
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> 查看当前JVM的 Perf Counter信息
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### 使用参考
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```
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$ perfcounter
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java.ci.totalTime 2325637411
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java.cls.loadedClasses 3403
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java.cls.sharedLoadedClasses 0
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java.cls.sharedUnloadedClasses 0
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java.cls.unloadedClasses 0
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java.property.java.version 11.0.4
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java.property.java.vm.info mixed mode
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java.property.java.vm.name OpenJDK 64-Bit Server VM
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...
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```
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可以用`-d`参数打印更多信息：
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```
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$ perfcounter -d
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Name Variability Units Value
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---------------------------------------------------------------------------------
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java.ci.totalTime Monotonic Ticks 3242526906
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java.cls.loadedClasses Monotonic Events 3404
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java.cls.sharedLoadedClasses Monotonic Events 0
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java.cls.sharedUnloadedClasses Monotonic Events 0
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java.cls.unloadedClasses Monotonic Events 0
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```
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### jdk9以上的应用
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如果没有打印出信息，应用在启动时，加下面的参数：
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```
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--add-opens java.base/jdk.internal.perf=ALL-UNNAMED --add-exports java.base/jdk.internal.perf=ALL-UNNAMED
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```
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