arthas常用命令

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

输出耗时大于100ms的调用路径

trace org.springframework.web.servlet.DispatcherServlet * '#cost > 100'

Affect(class count: 1 , method count: 44) cost in 356 ms, listenerId: 5
`---ts=2021-03-19 09:39:50;thread_name=http-nio-8088-exec-7;id=64;is_daemon=true;priority=5;TCCL=org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedWebappClassLoader@59b98152
    `---[527.902147ms] org.springframework.web.servlet.DispatcherServlet:doService()
        +---[0.00661ms] org.apache.commons.logging.Log:isDebugEnabled() #889
        +---[0.007177ms] org.springframework.web.util.WebUtils:isIncludeRequest() #898
        +---[0.006119ms] org.springframework.web.servlet.DispatcherServlet:getWebApplicationContext() #910
        +---[min=0.00399ms,max=0.00549ms,total=0.013975ms,count=3] javax.servlet.http.HttpServletRequest:setAttribute() #95
        +---[0.004205ms] javax.servlet.http.HttpServletRequest:setAttribute() #911
        +---[0.003514ms] javax.servlet.http.HttpServletRequest:setAttribute() #912
        +---[0.04213ms] org.springframework.web.servlet.DispatcherServlet:getThemeSource() #913
        |   `---[0.024214ms] org.springframework.web.servlet.DispatcherServlet:getThemeSource()
        |       +---[0.004096ms] org.springframework.web.servlet.DispatcherServlet:getWebApplicationContext() #782
        |       `---[0.004078ms] org.springframework.web.servlet.DispatcherServlet:getWebApplicationContext() #95
        +---[0.015018ms] org.springframework.web.servlet.FlashMapManager:retrieveAndUpdate() #916
        +---[0.005817ms] org.springframework.web.servlet.FlashMap:<init>() #920
        +---[0.003581ms] javax.servlet.http.HttpServletRequest:setAttribute() #921
        +---[527.660569ms] org.springframework.web.servlet.DispatcherServlet:doDispatch() #925
        |   `---[527.641089ms] org.springframework.web.servlet.DispatcherServlet:doDispatch()
        |       +---[0.00552ms] org.springframework.web.context.request.async.WebAsyncUtils:getAsyncManager() #953
        |       +---[0.034196ms] org.springframework.web.servlet.DispatcherServlet:checkMultipart() #960
        |       |   `---[0.018654ms] org.springframework.web.servlet.DispatcherServlet:checkMultipart()
        |       |       `---[0.007299ms] org.springframework.web.multipart.MultipartResolver:isMultipart() #1117
        |       +---[0.344646ms] org.springframework.web.servlet.DispatcherServlet:getHandler() #964
        |       |   `---[0.318626ms] org.springframework.web.servlet.DispatcherServlet:getHandler()
        |       |       +---[min=0.003103ms,max=0.003579ms,total=0.006682ms,count=2] org.apache.commons.logging.Log:isTraceEnabled() #1184
        |       |       `---[min=0.044735ms,max=0.229457ms,total=0.274192ms,count=2] org.springframework.web.servlet.HandlerMapping:getHandler() #1188
        |       +---[0.005121ms] org.springframework.web.servlet.HandlerExecutionChain:getHandler() #971
        |       +---[0.044803ms] org.springframework.web.servlet.DispatcherServlet:getHandlerAdapter() #95
        |       |   `---[0.027969ms] org.springframework.web.servlet.DispatcherServlet:getHandlerAdapter()
        |       |       +---[0.004322ms] org.apache.commons.logging.Log:isTraceEnabled() #1225
        |       |       `---[0.006146ms] org.springframework.web.servlet.HandlerAdapter:supports() #1228
        |       +---[0.003523ms] javax.servlet.http.HttpServletRequest:getMethod() #974
        |       +---[0.003492ms] org.springframework.web.servlet.HandlerExecutionChain:getHandler() #977
        |       +---[0.00555ms] org.springframework.web.servlet.HandlerAdapter:getLastModified() #95
        |       +---[0.003345ms] org.apache.commons.logging.Log:isDebugEnabled() #978
        |       +---[0.00582ms] org.springframework.web.context.request.ServletWebRequest:<init>() #981
        |       +---[0.01446ms] org.springframework.web.context.request.ServletWebRequest:checkNotModified() #95
        |       +---[2.956797ms] org.springframework.web.servlet.HandlerExecutionChain:applyPreHandle() #986
        |       +---[0.008488ms] org.springframework.web.servlet.HandlerExecutionChain:getHandler() #991
        |       +---[523.914178ms] org.springframework.web.servlet.HandlerAdapter:handle() #95
        |       +---[0.005795ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #993
        |       +---[0.044017ms] org.springframework.web.servlet.DispatcherServlet:applyDefaultViewName() #997
        |       |   `---[0.012355ms] org.springframework.web.servlet.DispatcherServlet:applyDefaultViewName()
        |       +---[0.012352ms] org.springframework.web.servlet.HandlerExecutionChain:applyPostHandle() #998
        |       +---[0.075111ms] org.springframework.web.servlet.DispatcherServlet:processDispatchResult() #1008
        |       |   `---[0.056069ms] org.springframework.web.servlet.DispatcherServlet:processDispatchResult()
        |       |       +---[0.005093ms] org.apache.commons.logging.Log:isDebugEnabled() #1075
        |       |       +---[0.007475ms] org.springframework.web.context.request.async.WebAsyncUtils:getAsyncManager() #1081
        |       |       +---[0.00442ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #95
        |       |       `---[0.00794ms] org.springframework.web.servlet.HandlerExecutionChain:triggerAfterCompletion() #1087
        |       `---[0.004107ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #1018
        +---[0.006615ms] org.springframework.web.context.request.async.WebAsyncUtils:getAsyncManager() #928
        `---[0.004469ms] org.springframework.web.context.request.async.WebAsyncManager:isConcurrentHandlingStarted() #95