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hengyunabc committed 2020-07-24 16:57:40 +08:00
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en/_sources/cat.md.txt
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cat
===
[`cat` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-cat)
> Concatenate and print files
en/_sources/dashboard.md.txt
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dashboard
=========
[`dashboard` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-dashboard)
> This is the real time statistics dashboard for the current system, press `Ctrl+C` to exit.
When running in Apache Tomcat Alibaba edition, the dashboard will also present the real time statistics of the tomcat, including [QPS](https://en.wikipedia.org/wiki/Queries_per_second), RT, error counts, and thread pool, etc.
en/_sources/echo.md.txt
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echo
===
[`echo` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-echo)
> write arguments to the standard output.
en/_sources/grep.md.txt
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grep
===
[`grep` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-grep)
> Similar to the traditional `grep` command.
en/_sources/jvm.md.txt
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jvm
===
[`sysenv` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-sysenv)
> Check the current JVM's info
### Usage
```
$ jvm
CATEGORY INFO
------------------------------------------------------------------------------------------------------------------------------------
RUNTIME
--------------------------------------------------------------------------------------------------------------
MACHINE-NAME 37@ff267334bb65
JVM-START-TIME 2020-07-23 07:50:36
MANAGEMENT-SPEC-VERSION 1.2
SPEC-NAME Java Virtual Machine Specification
SPEC-VENDOR Oracle Corporation
SPEC-VERSION 1.8
VM-NAME Java HotSpot(TM) 64-Bit Server VM
VM-VENDOR Oracle Corporation
VM-VERSION 25.201-b09
INPUT-ARGUMENTS []
CLASS-PATH demo-arthas-spring-boot.jar
BOOT-CLASS-PATH /usr/lib/jvm/java-8-oracle/jre/lib/resources.jar:/usr/lib/jvm/java-8-oracle/j
re/lib/rt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/sunrsasign.jar:/usr/lib/jvm/
java-8-oracle/jre/lib/jsse.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jce.jar:/us
r/lib/jvm/java-8-oracle/jre/lib/charsets.jar:/usr/lib/jvm/java-8-oracle/jre/l
ib/jfr.jar:/usr/lib/jvm/java-8-oracle/jre/classes
LIBRARY-PATH /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
RUNTIME MACHINE-NAME hellodeMacBook-Air.local
JVM-START-TIME 2015-12-23 10:54:18
MANAGEMENT-SPEC-VERSION 1.2
SPEC-NAME Java Virtual Machine Specification
SPEC-VENDOR Oracle Corporation
SPEC-VERSION 1.8
VM-NAME Java HotSpot(TM) 64-Bit Server VM
VM-VENDOR Oracle Corporation
VM-VERSION 25.60-b23
INPUT-ARGUMENTS -Xbootclasspath/a:/Users/hello/.jenv/versions/1.8/lib/tools.jar
-Djava.util.logging.config.file=/Users/hello/code/java/crash/packaging/target/
conf/logging.properties
--------------------------------------------------------------------------------------------------------------
CLASS-LOADING
--------------------------------------------------------------------------------------------------------------
LOADED-CLASS-COUNT 7529
TOTAL-LOADED-CLASS-COUNT 7529
UNLOADED-CLASS-COUNT 0
IS-VERBOSE false
CLASS-PATH /Users/hello/.jenv/versions/1.8/lib/tools.jar:/Users/hello/code/java/cras
h/packaging/target/bin/crash.cli-1.3.2-SNAPSHOT.jar::/Users/hello/code/java/cr
ash/packaging/target/lib/bcpkix-jdk15on-1.51.jar:/Users/hello/code/java/crash/
packaging/target/lib/bcprov-jdk15on-1.51.jar:/Users/hello/code/java/crash/pack
aging/target/lib/crash.connectors.ssh-1.3.2-SNAPSHOT-standalone.jar:/Users/hengyuna
bc/code/java/crash/packaging/target/lib/crash.connectors.telnet-1.3.2-SNAPSHOT-stan
dalone.jar:/Users/hello/code/java/crash/packaging/target/lib/crash.shell-1.3.2
-SNAPSHOT.jar:/Users/hello/code/java/crash/packaging/target/lib/groovy-all-1.8
.9.jar:/Users/hello/code/java/crash/packaging/target/lib/ivy-2.2.0.jar
BOOT-CLASS-PATH /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/resources.j
ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar:/
Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/sunrsasign.j
ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jsse.jar
:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jce.jar:/L
ibrary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/charsets.jar:
/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jfr.jar:/Li
brary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/classes:/Users/hen
gyunabc/.jenv/versions/1.8/lib/tools.jar
LIBRARY-PATH /Users/hello/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library
/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
--------------------------------------------------------------------------------------------------------------
COMPILATION
--------------------------------------------------------------------------------------------------------------
NAME HotSpot 64-Bit Tiered Compilers
TOTAL-COMPILE-TIME 14921(ms)
CLASS-LOADING LOADED-CLASS-COUNT 4264
TOTAL-LOADED-CLASS-COUNT 4264
UNLOADED-CLASS-COUNT 0
IS-VERBOSE false
--------------------------------------------------------------------------------------------------------------
GARBAGE-COLLECTORS
--------------------------------------------------------------------------------------------------------------
PS Scavenge name : PS Scavenge
[count/time (ms)] collectionCount : 7
collectionTime : 68
PS MarkSweep name : PS MarkSweep
[count/time (ms)] collectionCount : 1
collectionTime : 47
COMPILATION NAME HotSpot 64-Bit Tiered Compilers
TOTAL-COMPILE-TIME 5145(ms)
--------------------------------------------------------------------------------------------------------------
MEMORY-MANAGERS
--------------------------------------------------------------------------------------------------------------
CodeCacheManager Code Cache
GARBAGE-COLLECTORS PS Scavenge 6/74(ms)
[count/time]
PS MarkSweep 1/64(ms)
[count/time]
Metaspace Manager Metaspace
Compressed Class Space
MEMORY-MANAGERS CodeCacheManager Code Cache
Copy Eden Space
Survivor Space
Metaspace Manager Metaspace
Compressed Class Space
PS Scavenge PS Eden Space
PS Survivor Space
PS MarkSweep PS Eden Space
PS Survivor Space
PS Old Gen
MarkSweepCompact Eden Space
Survivor Space
Tenured Gen
MEMORY HEAP-MEMORY-USAGE 186646528/134217728/1908932608/31245568
[committed/init/max/used]
NO-HEAP-MEMORY-USAGE 35520512/2555904/-1/34584616
[committed/init/max/used]
PENDING-FINALIZE-COUNT 0
--------------------------------------------------------------------------------------------------------------
MEMORY
--------------------------------------------------------------------------------------------------------------
HEAP-MEMORY-USAGE init : 268435456(256.0 MiB)
[memory in bytes] used : 18039504(17.2 MiB)
committed : 181403648(173.0 MiB)
max : 3817865216(3.6 GiB)
NO-HEAP-MEMORY-USAGE init : 2555904(2.4 MiB)
[memory in bytes] used : 33926216(32.4 MiB)
committed : 35176448(33.5 MiB)
max : -1(-1 B)
OPERATING-SYSTEM OS Mac OS X
ARCH x86_64
PROCESSORS-COUNT 4
LOAD-AVERAGE 2.328125
VERSION 10.10.5
--------------------------------------------------------------------------------------------------------------
OPERATING-SYSTEM
--------------------------------------------------------------------------------------------------------------
OS Linux
ARCH amd64
PROCESSORS-COUNT 3
LOAD-AVERAGE 29.53
VERSION 4.15.0-52-generic
THREAD COUNT 16
DAEMON-COUNT 10
PEAK-COUNT 18
STARTED-COUNT 19
DEADLOCK-COUNT 0
--------------------------------------------------------------------------------------------------------------
THREAD
--------------------------------------------------------------------------------------------------------------
COUNT 30
DAEMON-COUNT 24
PEAK-COUNT 31
STARTED-COUNT 36
DEADLOCK-COUNT 0
--------------------------------------------------------------------------------------------------------------
FILE-DESCRIPTOR
MAX-FILE-DESCRIPTOR-COUNT 10240
OPEN-FILE-DESCRIPTOR-COUNT 648
Affect cost in 2 ms.
--------------------------------------------------------------------------------------------------------------
MAX-FILE-DESCRIPTOR-COUNT 1048576
OPEN-FILE-DESCRIPTOR-COUNT 100
Affect(row-cnt:0) cost in 88 ms.
```
### Thread related
en/_sources/keymap.md.txt
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Arthas Console Keymap
===
[`keymap` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-keymap)
Use `keymap` command to print the current keymap:
The default keymap is:
en/_sources/perfcounter.md.txt
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perfcounter
===
[`perfcounter` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-perfcounter)
> Check the current JVM Perf Counter information.
### Usage
en/_sources/pwd.md.txt
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pwd
===
[`pwd` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-pwd)
> Return working directory name
en/_sources/reset.md.txt
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reset
===
[`reset` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-reset)
> Reset all classes that have been enhanced by Arthas. These enhanced classes will also be reset when Arthas server is `stop`.
### Usage
en/_sources/sysenv.md.txt
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sysenv
=======================
[`sysenv` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-sysenv)
> View the current JVM environment variables.
### Usage
en/_sources/sysprop.md.txt
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sysprop
=======
[`sysprop` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-sysprop)
> Examine the system properties from the target JVM
### Usage
en/_sources/tee.md.txt
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tee
===
> Similar to the traditional `tee` command.
[`tee` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-tee)
> Similar to the traditional `tee` command, it is used to read standard input data and output its contents into a file.
> `tee` will read data from standard input device, output its content to standard output device, and save it as a file.
```
en/_sources/thread.md.txt
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thread
======
[`thread` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-thread)
> Check the basic info and stack trace of the target thread.
### Parameters
en/_sources/vmoption.md.txt
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vmoption
===
[`vmoption` online tutorial](https://alibaba.github.io/arthas/arthas-tutorials?language=en&id=command-vmoption)
> Display, and update the vm diagnostic options.
### Usage