8276265: jcmd man page is outdated
Reviewed-by: stuefe, cjplummer
This commit is contained in:
David Holmes
parent
0ca0acf63c
commit
3445e50bd5
@ -1,4 +1,4 @@
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.\" Copyright (c) 2012, 2020, Oracle and/or its affiliates. All rights reserved.
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.\" Copyright (c) 2012, 2021, Oracle and/or its affiliates. All rights reserved.
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.\" DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.\"
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.\" This code is free software; you can redistribute it and/or modify it
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@ -179,6 +179,15 @@ Impact: Medium
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Permission: \f[CB]java.lang.management.ManagementPermission(monitor)\f[R]
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.RE
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.TP
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.B \f[CB]Compiler.perfmap\f[R] (Linux only)
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Write map file for Linux perf tool.
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.RS
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.PP
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Impact: Low
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.PP
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Permission: \f[CB]java.lang.management.ManagementPermission(monitor)\f[R]
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.RE
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.TP
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.B \f[CB]Compiler.queue\f[R]
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Prints methods queued for compilation.
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.RS
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@ -246,6 +255,14 @@ The \f[I]options\f[R] must be specified using either \f[I]key\f[R] or
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.IP \[bu] 2
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\f[CB]\-all\f[R]: (Optional) Inspects all objects, including unreachable
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objects (BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]\-parallel\f[R]: (Optional) Number of parallel threads to use for
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heap inspection.
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0 (the default) means let the VM determine the number of threads to use.
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1 means use one thread (disable parallelism).
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For any other value the VM will try to use the specified number of
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threads, but might use fewer.
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(INT, 0)
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.RE
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.TP
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.B \f[CB]GC.finalizer_info\f[R]
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@ -275,6 +292,14 @@ The following \f[I]options\f[R] must be specified using either
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.IP \[bu] 2
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\f[CB]\-all\f[R]: (Optional) Dump all objects, including unreachable
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objects (BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]\-gz\f[R]: (Optional) If specified, the heap dump is written in
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gzipped format using the given compression level.
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1 (recommended) is the fastest, 9 the strongest compression.
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(INT, 1)
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.IP \[bu] 2
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\f[CB]\-overwrite\f[R]: (Optional) If specified, the dump file will be
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overwritten if it exists (BOOLEAN, false)
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.PP
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\f[I]arguments\f[R]:
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.IP \[bu] 2
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@ -441,8 +466,6 @@ If no filename is given, a filename is generated from the PID and the
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current date.
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The filename may also be a directory in which case, the filename is
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generated from the PID and the current date in the specified directory.
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If \f[CB]%p\f[R] and/or \f[CB]%t\f[R] is specified in the filename, it
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expands to the JVM\[aq]s PID and the current timestamp, respectively.
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(STRING, no default value)
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.IP \[bu] 2
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\f[CB]maxage\f[R]: (Optional) Length of time for dumping the flight
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@ -511,8 +534,6 @@ current date and is placed in the directory where the process was
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started.
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The filename may also be a directory in which case, the filename is
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generated from the PID and the current date in the specified directory.
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If \f[CB]%p\f[R] and/or \f[CB]%t\f[R] is specified in the filename, it
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expands to the JVM\[aq]s PID and the current timestamp, respectively.
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(STRING, no default value)
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.IP \[bu] 2
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\f[CB]maxage\f[R]: (Optional) Maximum time to keep the recorded data on
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@ -604,8 +625,6 @@ If no parameters are entered, then no recording is stopped.
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.IP \[bu] 2
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\f[CB]filename\f[R]: (Optional) Name of the file to which the recording is
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written when the recording is stopped.
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If \f[CB]%p\f[R] and/or \f[CB]%t\f[R] is specified in the filename, it
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expands to the JVM\[aq]s PID and the current timestamp, respectively.
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If no path is provided, the data from the recording is discarded.
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(STRING, no default value)
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.IP \[bu] 2
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@ -751,6 +770,15 @@ Stops the remote management agent.
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Impact: Low \-\-\- no impact
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.RE
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.TP
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.B \f[CB]System.trim_native_heap\f[R] (Linux only)
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Attempts to free up memory by trimming the C\-heap.
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.RS
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.PP
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Impact: Low
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.PP
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Permission: \f[CB]java.lang.management.ManagementPermission(control)\f[R]
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.RE
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.TP
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.B \f[CB]Thread.print\f[R] [\f[I]options\f[R]]
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Prints all threads with stacktraces.
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.RS
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@ -766,10 +794,55 @@ The following \f[I]options\f[R] must be specified using either
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.PP
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\f[I]options\f[R]:
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.IP \[bu] 2
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\f[CB]\-e\f[R]: (Optional) Print extended thread information (BOOLEAN,
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false)
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.IP \[bu] 2
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\f[CB]\-l\f[R]: (Optional) Prints \f[CB]java.util.concurrent\f[R] locks
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(BOOLEAN, false)
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.RE
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.TP
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.B \f[CB]VM.cds\f[R] [\f[I]arguments\f[R]]
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Dump a static or dynamic shared archive including all shareable classes.
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.RS
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.PP
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Impact: Medium \-\-\- pause time depends on number of loaded classes
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.PP
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Permission: \f[CB]java.lang.management.ManagementPermission(monitor)\f[R]
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.PP
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\f[I]arguments\f[R]:
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.IP \[bu] 2
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\f[CB]subcmd\f[R]: \f[CB]static_dump\f[R] | \f[CB]dynamic_dump\f[R] (STRING,
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no default value)
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.IP \[bu] 2
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\f[CB]filename\f[R]: (Optional) Name of the shared archive to be dumped
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(STRING, no default value)
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.RE
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.TP
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.B \f[CB]VM.classloaders\f[R] [\f[I]options\f[R]]
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Prints classloader hierarchy.
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.RS
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.PP
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Impact: Medium \-\-\- Depends on number of class loaders and classes
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loaded.
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.PP
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Permission: \f[CB]java.lang.management.ManagementPermission(monitor)\f[R]
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.PP
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The following \f[I]options\f[R] must be specified using either
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\f[I]key\f[R] or \f[I]key\f[R]\f[CB]=\f[R]\f[I]value\f[R] syntax.
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.PP
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\f[I]options\f[R]:
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.IP \[bu] 2
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\f[CB]show\-classes\f[R]: (Optional) Print loaded classes.
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]verbose\f[R]: (Optional) Print detailed information.
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]fold\f[R]: (Optional) Show loaders of the same name and class as
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one.
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(BOOLEAN, true)
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.RE
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.TP
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.B \f[CB]VM.classloader_stats\f[R]
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Prints statistics about all ClassLoaders.
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.RS
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@ -831,6 +904,31 @@ Impact: Low
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Permission: \f[CB]java.lang.management.ManagementPermission(monitor)\f[R]
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.RE
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.TP
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.B \f[CB]VM.events\f[R] [\f[I]options\f[R]]
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Print VM event logs
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.RS
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.PP
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Impact: Low \-\-\- Depends on event log size.
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.PP
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Permission: \f[CB]java.lang.management.ManagementPermission(monitor)\f[R]
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.PP
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\f[I]options\f[R]:
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.PP
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\f[B]Note:\f[R]
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.PP
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The following \f[I]options\f[R] must be specified using either
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\f[I]key\f[R] or \f[I]key\f[R]\f[CB]=\f[R]\f[I]value\f[R] syntax.
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.IP \[bu] 2
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\f[CB]log\f[R]: (Optional) Name of log to be printed.
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If omitted, all logs are printed.
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(STRING, no default value)
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.IP \[bu] 2
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\f[CB]max\f[R]: (Optional) Maximum number of events to be printed (newest
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first).
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If omitted, all events are printed.
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(STRING, no default value)
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.RE
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.TP
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.B \f[CB]VM.info\f[R]
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Prints information about the JVM environment and status.
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.RS
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@ -900,6 +998,48 @@ The following \f[I]options\f[R] must be specified using either
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(BOOLEAN, false).
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.RE
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.TP
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.B \f[CB]VM.metaspace\f[R] [\f[I]options\f[R]]
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Prints the statistics for the metaspace
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.RS
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.PP
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Impact: Medium \-\-\- Depends on number of classes loaded.
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.PP
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Permission: \f[CB]java.lang.management.ManagementPermission(monitor)\f[R]
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.PP
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\f[B]Note:\f[R]
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.PP
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The following \f[I]options\f[R] must be specified using either
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\f[I]key\f[R] or \f[I]key\f[R]\f[CB]=\f[R]\f[I]value\f[R] syntax.
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.PP
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\f[I]options\f[R]:
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.IP \[bu] 2
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\f[CB]basic\f[R]: (Optional) Prints a basic summary (does not need a
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safepoint).
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]show\-loaders\f[R]: (Optional) Shows usage by class loader.
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]show\-classes\f[R]: (Optional) If show\-loaders is set, shows loaded
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classes for each loader.
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]by\-chunktype\f[R]: (Optional) Break down numbers by chunk type.
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]by\-spacetype\f[R]: (Optional) Break down numbers by loader type.
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]vslist\f[R]: (Optional) Shows details about the underlying virtual
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space.
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(BOOLEAN, false)
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.IP \[bu] 2
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\f[CB]scale\f[R]: (Optional) Memory usage in which to scale.
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Valid values are: 1, KB, MB or GB (fixed scale) or "dynamic" for a
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dynamically chosen scale.
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(STRING, dynamic)
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.RE
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.TP
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.B \f[CB]VM.native_memory\f[R] [\f[I]options\f[R]]
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Prints native memory usage
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.RS
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