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Arthas 学习笔记

阿里 Arthas 学习笔记

thread

查看当前线程信息,查看线程的堆栈。

参数说明:

参数名称 参数说明 示例
id 线程id
[n:] 指定最忙的前N个线程并打印堆栈 thread -n 3
[b] 找出当前阻塞其他线程的线程 thread -b
[i ] 指定cpu占比统计的采样间隔,单位为毫秒

注意, 目前只支持找出synchronized关键字阻塞住的线程, 如果是java.util.concurrent.Lock, 目前还不支持。

jvm

查看当前JVM信息。

使用参考:

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$ jvm
RUNTIME
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MACHINE-NAME 1@9db2689bb4d6
JVM-START-TIME 2019-07-16 18:18:06
MANAGEMENT-SPEC-VERSION 2.0
SPEC-NAME Java Virtual Machine Specification
SPEC-VENDOR Oracle Corporation
SPEC-VERSION 12
VM-NAME OpenJDK 64-Bit Server VM
VM-VENDOR Oracle Corporation
VM-VERSION 12.0.1+12
INPUT-ARGUMENTS -XX:G1PeriodicGCInterval=120000
-XX:G1PeriodicGCSystemLoadThreshold=0

CLASS-PATH application.jar
BOOT-CLASS-PATH
LIBRARY-PATH /usr/java/packages/lib:/usr/lib64:/lib64:/lib:/usr/lib

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
CLASS-LOADING
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
LOADED-CLASS-COUNT 11046
TOTAL-LOADED-CLASS-COUNT 11377
UNLOADED-CLASS-COUNT 331
IS-VERBOSE false

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
COMPILATION
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
NAME HotSpot 64-Bit Tiered Compilers
TOTAL-COMPILE-TIME 74558(ms)

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
GARBAGE-COLLECTORS
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
G1 Young Generation 12027/52593(ms)
[count/time]
G1 Old Generation 0/0(ms)
[count/time]

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MEMORY-MANAGERS
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
CodeCacheManager CodeHeap 'non-nmethods'
CodeHeap 'profiled nmethods'
CodeHeap 'non-profiled nmethods'

Metaspace Manager Metaspace
Compressed Class Space

G1 Young Generation G1 Eden Space
G1 Survivor Space
G1 Old Gen

G1 Old Generation G1 Eden Space
G1 Survivor Space
G1 Old Gen


-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MEMORY
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
HEAP-MEMORY-USAGE 184549376(176.00 MiB)/2113929216(1.97 GiB)/32178700288(29.97 GiB)/60812520(58.00 MiB)
[committed/init/max/used]
NO-HEAP-MEMORY-USAGE 115539968(110.19 MiB)/7667712(7.31 MiB)/-1(-1 B)/108227072(103.21 MiB)
[committed/init/max/used]
PENDING-FINALIZE-COUNT 0

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
OPERATING-SYSTEM
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
OS Linux
ARCH amd64
PROCESSORS-COUNT 32
LOAD-AVERAGE 2.25
VERSION 3.10.0-514.26.2.el7.x86_64

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
THREAD
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
COUNT 1060
DAEMON-COUNT 25
PEAK-COUNT 1062
STARTED-COUNT 2463
DEADLOCK-COUNT 0

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
FILE-DESCRIPTOR
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MAX-FILE-DESCRIPTOR-COUNT -1
OPEN-FILE-DESCRIPTOR-COUNT -1
Affect(row-cnt:0) cost in 14 ms.

sysprop

查看当前JVM的系统属性(System Property)。

与jinfo 信息类似,不过sysprop提供修改单个属性值的功能。

查看单个属性,支持通过TAB键自动补全。

sysenv

查看当前JVM的环境属性(System Environment Variables)。

查看单个属性,支持通过TAB键自动补全。

sc、sm、jad

sc

查看JVM已加载的类信息,可以package前缀模糊匹配。

sm

查看已加载类的方法信息。

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$ monitor com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 90 ms.
timestamp class method total success fail avg-rt(ms) fail-rate
---------------------------------------------------------------------------------------------------------------------------------------------
2019-08-02 10:37:50 com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 61 61 0 96.68 0.00%

timestamp class method total success fail avg-rt(ms) fail-rate
---------------------------------------------------------------------------------------------------------------------------------------------
2019-08-02 10:38:50 com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 27 27 0 51.06 0.00%

timestamp class method total success fail avg-rt(ms) fail-rate
---------------------------------------------------------------------------------------------------------------------------------------------
2019-08-02 10:39:50 com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 0 0 0 0.00 0.00%

jad

反编译指定已加载类的源码。

jad 命令将 JVM 中实际运行的 class 的 byte code 反编译成 java 代码,便于你理解业务逻辑;

  • 在 Arthas Console 上,反编译出来的源码是带语法高亮的,阅读更方便
  • 当然,反编译出来的 java 代码可能会存在语法错误,但不影响你进行阅读理解

sc、sm、jad 三个命令可以结合使用。

classloader

查看classloader的继承树,urls,类加载信息。

classloader 命令将 JVM 中所有的classloader的信息统计出来,并可以展示继承树,urls等。

可以让指定的classloader去getResources,打印出所有查找到的resources的url。对于ResourceNotFoundException比较有用。

mc、redefine

mc

Memory Compiler/内存编译器,编译.java文件生成.class。

redefine

加载外部的.class文件,redefine jvm已加载的类。

mc、redefine 可以结合使用

monitor

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$ monitor com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 90 ms.
timestamp class method total success fail avg-rt(ms) fail-rate
---------------------------------------------------------------------------------------------------------------------------------------------
2019-08-02 10:37:50 com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 61 61 0 96.68 0.00%

timestamp class method total success fail avg-rt(ms) fail-rate
---------------------------------------------------------------------------------------------------------------------------------------------
2019-08-02 10:38:50 com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 27 27 0 51.06 0.00%

timestamp class method total success fail avg-rt(ms) fail-rate
---------------------------------------------------------------------------------------------------------------------------------------------
2019-08-02 10:39:50 com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 0 0 0 0.00 0.00%

watch

方法执行数据观测。

让你能方便的观察到指定方法的调用情况。能观察到的范围为:返回值、抛出异常、入参,通过编写OGNL 表达式进行对应变量的查看。

这个有点强大啊

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$ watch  com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord  "{params,target,returnObj}" -x 2 -b -s -n 2
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 111 ms.
ts=2019-08-02 10:48:48; [cost=0.006503ms] result=@ArrayList[
@Object[][
@String[monitor],
@String[console],
null,
@String[all],
@String[all],
null,
null,
@Integer[100],
@Long[1564713816522],
@Long[1564714116522],
null,
@[desc],
],
@LogSearchService[
log=@Logger[Logger[com.jiankunking.logsearch.services.LogSearchService]],
esFilterService=@ESFilterService[com.jiankunking.logsearch.services.ESFilterService@58ebfd03],
indexPrefixService=@IndexPrefixService[com.jiankunking.logsearch.services.IndexPrefixService@19fb8826],
searchAfterSort=@String[][isEmpty=false;size=3],
],
null,
]
ts=2019-08-02 10:48:48; [cost=91.878471ms] result=@ArrayList[
@Object[][
@String[monitor],
@String[console],
null,
@String[all],
@String[all],
null,
null,
@Integer[100],
@Long[1564713816522],
@Long[1564714116522],
null,
@[desc],
],
@LogSearchService[
log=@Logger[Logger[com.jiankunking.logsearch.services.LogSearchService]],
esFilterService=@ESFilterService[com.jiankunking.logsearch.services.ESFilterService@58ebfd03],
indexPrefixService=@IndexPrefixService[com.jiankunking.logsearch.services.IndexPrefixService@19fb8826],
searchAfterSort=@String[][isEmpty=false;size=3],
],
@SearchResult[
metadata=@MetaData[MetaData(total=21431)],
items=@ArrayList[isEmpty=false;size=100],
],
]

trace

方法内部调用路径,并输出方法路径上的每个节点上耗时

trace 命令能主动搜索 class-pattern/method-pattern 对应的方法调用路径,渲染和统计整个调用链路上的所有性能开销和追踪调用链路。

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$ trace  com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 182 ms.
`---ts=2019-08-02 10:53:36;thread_name=http-nio-8080-exec-8;id=42d;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@1095194
`---[416.520613ms] com.jiankunking.logsearch.services.LogSearchService:queryStringByKeyWord()
+---[0.019415ms] org.elasticsearch.search.builder.SearchSourceBuilder:<init>() #78
+---[0.011853ms] org.elasticsearch.index.query.QueryBuilders:boolQuery() #79
+---[0.02617ms] com.jiankunking.logsearch.services.ESFilterService:addProjectFilter() #80
+---[0.005593ms] com.jiankunking.logsearch.util.StringUtils:isEmpty() #81
+---[0.006519ms] java.lang.String:equals() #81
+---[0.002157ms] com.jiankunking.logsearch.util.StringUtils:isEmpty() #84
+---[0.002046ms] java.lang.String:equals() #84
+---[0.004284ms] com.jiankunking.logsearch.util.StringUtils:isNotEmpty() #87
+---[0.002342ms] com.jiankunking.logsearch.util.StringUtils:isNotEmpty() #90
+---[0.002066ms] com.jiankunking.logsearch.util.StringUtils:isNotEmpty() #98
+---[0.005008ms] org.elasticsearch.index.query.QueryBuilders:rangeQuery() #114
+---[0.005904ms] com.jiankunking.logsearch.util.TimeUtils:toDate() #115
+---[0.006666ms] org.elasticsearch.index.query.RangeQueryBuilder:gte() #115
+---[0.002128ms] com.jiankunking.logsearch.util.TimeUtils:toDate() #116
+---[0.004161ms] org.elasticsearch.index.query.RangeQueryBuilder:lte() #116
+---[0.347063ms] org.elasticsearch.index.query.BoolQueryBuilder:must() #117
+---[min=0.002196ms,max=0.030129ms,total=0.036436ms,count=3] org.elasticsearch.search.builder.SearchSourceBuilder:sort() #126
+---[0.005683ms] org.elasticsearch.search.builder.SearchSourceBuilder:fetchSource() #131
+---[0.003406ms] org.elasticsearch.search.builder.SearchSourceBuilder:size() #133
+---[0.003613ms] org.elasticsearch.search.builder.SearchSourceBuilder:query() #133
+---[0.321264ms] org.elasticsearch.search.builder.SearchSourceBuilder:toString() #134
+---[0.00689ms] org.springframework.http.HttpMethod:name() #136
+---[0.172438ms] com.jiankunking.logsearch.services.IndexPrefixService:getIndexPrefix() #136
+---[0.012968ms] com.jiankunking.logsearch.util.ESQueryUtils:getEndpoint() #136
+---[398.953869ms] com.jiankunking.logsearch.util.ESQueryUtils:performRequest() #136
+---[0.336319ms] com.alibaba.fastjson.JSON:parse() #138
+---[min=0.002461ms,max=0.013798ms,total=0.016259ms,count=2] java.util.Map:get() #140
+---[0.006434ms] java.lang.Integer:intValue() #140
+---[min=0.001908ms,max=0.002073ms,total=0.003981ms,count=2] java.util.Map:get() #141
+---[0.007532ms] com.jiankunking.logsearch.dto.SearchResult:<init>() #145
+---[0.004286ms] java.util.ArrayList:<init>() #146
+---[0.005725ms] com.alibaba.fastjson.JSONArray:iterator() #148
+---[min=8.07E-4ms,max=0.010324ms,total=0.124433ms,count=101] java.util.Iterator:hasNext() #148
+---[min=8.16E-4ms,max=0.009674ms,total=0.114893ms,count=100] java.util.Iterator:next() #148
+---[min=8.38E-4ms,max=0.013835ms,total=0.130734ms,count=100] com.alibaba.fastjson.JSONObject:get() #150
+---[min=8.69E-4ms,max=0.005654ms,total=0.112518ms,count=100] com.jiankunking.logsearch.util.MapUtils:getSize() #151
+---[min=7.84E-4ms,max=0.005522ms,total=0.106345ms,count=100] java.util.HashMap:<init>() #151
+---[min=8.4E-4ms,max=0.016457ms,total=0.12907ms,count=100] com.alibaba.fastjson.JSONArray:iterator() #152
+---[min=8.21E-4ms,max=0.002612ms,total=0.106495ms,count=100] java.util.Iterator:hasNext() #152
+---[min=8.07E-4ms,max=0.018355ms,total=0.143992ms,count=100] java.util.Iterator:next() #152
+---[min=8.72E-4ms,max=0.008687ms,total=0.132524ms,count=100] java.lang.String:valueOf() #153
+---[min=8.07E-4ms,max=0.008049ms,total=0.110329ms,count=100] java.lang.String:contains() #153
+---[min=8.46E-4ms,max=0.002612ms,total=0.109295ms,count=100] java.lang.String:valueOf() #156
+---[min=8.86E-4ms,max=0.041239ms,total=0.178986ms,count=100] java.util.HashMap:put() #156
+---[min=7.96E-4ms,max=0.008521ms,total=0.113489ms,count=100] com.alibaba.fastjson.JSONObject:get() #159
+---[min=8.2E-4ms,max=0.016801ms,total=0.125154ms,count=100] java.util.Map:get() #159
+---[min=8.39E-4ms,max=0.002089ms,total=0.106842ms,count=100] java.util.HashMap:put() #159
+---[min=7.86E-4ms,max=0.002836ms,total=0.104852ms,count=100] com.alibaba.fastjson.JSONObject:get() #160
+---[min=8.4E-4ms,max=0.003068ms,total=0.10763ms,count=100] java.util.HashMap:put() #160
+---[min=8.02E-4ms,max=0.020112ms,total=0.122423ms,count=100] com.alibaba.fastjson.JSONObject:get() #161
+---[min=8.22E-4ms,max=0.001939ms,total=0.104809ms,count=100] java.util.HashMap:put() #161
+---[min=7.99E-4ms,max=0.00186ms,total=0.10316ms,count=100] com.alibaba.fastjson.JSONObject:get() #162
+---[min=8.17E-4ms,max=0.012238ms,total=0.115955ms,count=100] java.util.Map:get() #162
+---[min=8.14E-4ms,max=0.018342ms,total=0.124331ms,count=100] java.util.HashMap:put() #162
+---[min=8.47E-4ms,max=0.003852ms,total=0.113692ms,count=100] com.alibaba.fastjson.JSONObject:containsKey() #164
+---[min=8.11E-4ms,max=0.017145ms,total=0.122375ms,count=100] com.alibaba.fastjson.JSONObject:containsKey() #167
+---[min=7.85E-4ms,max=0.002459ms,total=0.10233ms,count=100] com.alibaba.fastjson.JSONObject:get() #167
+---[min=8.57E-4ms,max=0.005959ms,total=0.11281ms,count=100] java.util.Map:containsKey() #167
+---[min=7.86E-4ms,max=0.016889ms,total=0.116022ms,count=100] com.alibaba.fastjson.JSONObject:get() #171
+---[min=8.27E-4ms,max=0.007969ms,total=0.121529ms,count=100] java.util.Map:get() #171
+---[min=8.24E-4ms,max=0.017969ms,total=0.126264ms,count=100] java.util.Map:containsKey() #171
+---[min=7.83E-4ms,max=0.001924ms,total=0.101244ms,count=100] com.alibaba.fastjson.JSONObject:get() #172
+---[min=7.92E-4ms,max=0.247702ms,total=0.502606ms,count=200] java.util.Map:get() #172
+---[min=8.61E-4ms,max=0.010095ms,total=0.124106ms,count=100] java.util.HashMap:put() #172
+---[min=7.84E-4ms,max=0.002789ms,total=0.100561ms,count=100] com.alibaba.fastjson.JSONObject:get() #174
+---[min=8.18E-4ms,max=0.003825ms,total=0.105746ms,count=100] java.util.Map:get() #174
+---[min=8.17E-4ms,max=0.003044ms,total=0.108946ms,count=100] java.util.Map:containsKey() #174
+---[min=7.83E-4ms,max=0.010689ms,total=0.10957ms,count=100] com.alibaba.fastjson.JSONObject:get() #175
+---[min=7.92E-4ms,max=0.018299ms,total=0.225606ms,count=200] java.util.Map:get() #175
+---[min=8.53E-4ms,max=0.002182ms,total=0.108485ms,count=100] java.util.HashMap:put() #175
+---[min=7.84E-4ms,max=0.005874ms,total=0.103371ms,count=100] com.alibaba.fastjson.JSONObject:get() #177
+---[min=8.02E-4ms,max=0.002017ms,total=0.101695ms,count=100] java.util.Map:get() #177
+---[min=8.26E-4ms,max=0.002735ms,total=0.106121ms,count=100] java.util.Map:containsKey() #177
+---[min=8.0E-4ms,max=0.017176ms,total=0.130393ms,count=100] com.alibaba.fastjson.JSONObject:get() #178
+---[min=8.03E-4ms,max=0.003318ms,total=0.204767ms,count=200] java.util.Map:get() #178
+---[min=8.55E-4ms,max=0.008081ms,total=0.115006ms,count=100] java.util.HashMap:put() #178
+---[min=9.11E-4ms,max=0.014017ms,total=0.136197ms,count=100] java.util.List:add() #180
+---[0.005288ms] com.jiankunking.logsearch.dto.SearchResult:setItems() #182
`---[0.002643ms] com.jiankunking.logsearch.dto.SearchResult:setTotal() #183

stack

输出当前方法被调用的调用路径。

很多时候我们都知道一个方法被执行,但这个方法被执行的路径非常多,或者你根本就不知道这个方法是从那里被执行了,此时你需要的是 stack 命令。

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$ stack  com.jiankunking.logsearch.services.LogSearchService queryStringByKeyWord 
Press Q or Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 173 ms.
ts=2019-08-02 10:55:44;thread_name=http-nio-8080-exec-1;id=426;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@1095194
@com.jiankunking.logsearch.controller.LogSearchController.searchByKeyWord()
at com.jiankunking.logsearch.controller.LogSearchController$$FastClassBySpringCGLIB$$61775844.invoke(<generated>:-1)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:746)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:88)
at com.jiankunking.logsearch.aspect.ControllerTimeConsumeAspect.doAround(ControllerTimeConsumeAspect.java:34)
at jdk.internal.reflect.GeneratedMethodAccessor91.invoke(null:-1)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:567)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644)
at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633)
at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:174)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
at com.jiankunking.logsearch.controller.LogSearchController$$EnhancerBySpringCGLIB$$2f145034.searchByKeyWord(<generated>:-1)
at jdk.internal.reflect.GeneratedMethodAccessor97.invoke(null:-1)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:567)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:891)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:835)

tt

方法执行数据的时空隧道,记录下指定方法每次调用的入参和返回信息,并能对这些不同的时间下调用进行观测。

options

全局开关

名称 默认值 描述
unsafe false 是否支持对系统级别的类进行增强,打开该开关可能导致把JVM搞挂,请慎重选择!
dump false 是否支持被增强了的类dump到外部文件中,如果打开开关,class文件会被dump到/${application dir}/arthas-class-dump/目录下,具体位置详见控制台输出
batch-re-transform true 是否支持批量对匹配到的类执行retransform操作
json-format false 是否支持json化的输出
disable-sub-class false 是否禁用子类匹配,默认在匹配目标类的时候会默认匹配到其子类,如果想精确匹配,可以关闭此开关
debug-for-asm false 打印ASM相关的调试信息
save-result false 是否打开执行结果存日志功能,打开之后所有命令的运行结果都将保存到/home/admin/logs/arthas/arthas.log中
job-timeout id 异步后台任务的默认超时时间,超过这个时间,任务自动停止;比如设置 1d, 2h, 3m, 25s,分别代表天、小时、分、秒
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