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| .\" Arch: generic |
| .\" Software: JDK 8 |
| .\" Date: 10 May 2011 |
| .\" SectDesc: Monitoring Tools |
| .\" Title: jstat.1 |
| .\" |
| .if n .pl 99999 |
| .TH jstat 1 "10 May 2011" "JDK 8" "Monitoring Tools" |
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| .\" * MAIN CONTENT STARTS HERE *
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| |
| .SH NAME |
| jstat \- Monitors Java Virtual Machine (JVM) statistics\&. This command is experimental and unsupported\&. |
| .SH SYNOPSIS |
| .sp |
| .nf |
| |
| \fBjstat\fR [ \fIgeneralOption\fR | \fIoutputOptions vmid\fR [ \fIinterval\fR[s|ms] [ \fIcount \fR] ] |
| .fi |
| .sp |
| .TP |
| \fIgeneralOption\fR |
| A single general command-line option \f3-help\fR or \f3-options\fR\&. See General Options\&. |
| .TP |
| \fIoutputOptions\fR |
| One or more output options that consist of a single \f3statOption\fR, plus any of the \f3-t\fR, \f3-h\fR, and \f3-J\fR options\&. See Output Options\&. |
| .TP |
| \fIvmid\fR |
| Virtual machine identifier, which is a string that indicates the target JVM\&. The general syntax is the following: |
| .sp |
| .nf |
| \f3[protocol:][//]lvmid[@hostname[:port]/servername]\fP |
| .fi |
| .nf |
| \f3\fP |
| .fi |
| .sp |
| |
| |
| The syntax of the \f3vmid\fR string corresponds to the syntax of a URI\&. The \f3vmid\fR string can vary from a simple integer that represents a local JVM to a more complex construction that specifies a communications protocol, port number, and other implementation-specific values\&. See Virtual Machine Identifier\&. |
| .TP |
| \fIinterval\fR [s|ms] |
| Sampling interval in the specified units, seconds (s) or milliseconds (ms)\&. Default units are milliseconds\&. Must be a positive integer\&. When specified, the \f3jstat\fR command produces its output at each interval\&. |
| .TP |
| \fIcount\fR |
| Number of samples to display\&. The default value is infinity which causes the \f3jstat\fR command to display statistics until the target JVM terminates or the \f3jstat\fR command is terminated\&. This value must be a positive integer\&. |
| .SH DESCRIPTION |
| The \f3jstat\fR command displays performance statistics for an instrumented Java HotSpot VM\&. The target JVM is identified by its virtual machine identifier, or \f3vmid\fR option\&. |
| .SH VIRTUAL\ MACHINE\ IDENTIFIER |
| The syntax of the \f3vmid\fR string corresponds to the syntax of a URI: |
| .sp |
| .nf |
| \f3[protocol:][//]lvmid[@hostname[:port]/servername]\fP |
| .fi |
| .nf |
| \f3\fP |
| .fi |
| .sp |
| .TP |
| \fIprotocol\fR |
| The communications protocol\&. If the \fIprotocol\fR value is omitted and a host name is not specified, then the default protocol is a platform-specific optimized local protocol\&. If the \fIprotocol\fR value is omitted and a host name is specified, then the default protocol is \f3rmi\fR\&. |
| .TP |
| \fIlvmid\fR |
| The local virtual machine identifier for the target JVM\&. The \f3lvmid\fR is a platform-specific value that uniquely identifies a JVM on a system\&. The \f3lvmid\fR is the only required component of a virtual machine identifier\&. The \f3lvmid\fR is typically, but not necessarily, the operating system\&'s process identifier for the target JVM process\&. You can use the \f3jps\fR command to determine the \f3lvmid\fR\&. Also, you can determine the \f3lvmid\fR on UNIX platforms with the \f3ps\fR command, and on Windows with the Windows Task Manager\&. |
| .TP |
| \fIhostname\fR |
| A hostname or IP address that indicates the target host\&. If the \fIhostname\fR value is omitted, then the target host is the local host\&. |
| .TP |
| \fIport\fR |
| The default port for communicating with the remote server\&. If the \fIhostname\fR value is omitted or the \fIprotocol\fR value specifies an optimized, local protocol, then the \fIport\fR value is ignored\&. Otherwise, treatment of the \f3port\fR parameter is implementation-specific\&. For the default \f3rmi\fR protocol, the port value indicates the port number for the rmiregistry on the remote host\&. If the \fIport\fR value is omitted and the \fIprotocol\fR value indicates \f3rmi\fR, then the default rmiregistry port (1099) is used\&. |
| .TP |
| \fIservername\fR |
| The treatment of the \f3servername\fR parameter depends on implementation\&. For the optimized local protocol, this field is ignored\&. For the \f3rmi\fR protocol, it represents the name of the RMI remote object on the remote host\&. |
| .SH OPTIONS |
| The \f3jstat\fR command supports two types of options, general options and output options\&. General options cause the \f3jstat\fR command to display simple usage and version information\&. Output options determine the content and format of the statistical output\&. |
| .PP |
| All options and their functionality are subject to change or removal in future releases\&. |
| .SS GENERAL\ OPTIONS |
| If you specify one of the general options, then you cannot specify any other option or parameter\&. |
| .TP |
| -help |
| .br |
| Displays a help message\&. |
| .TP |
| -options |
| .br |
| Displays a list of static options\&. See Output Options\&. |
| .SS OUTPUT\ OPTIONS |
| If you do not specify a general option, then you can specify output options\&. Output options determine the content and format of the \f3jstat\fR command\&'s output, and consist of a single \f3statOption\fR, plus any of the other output options (\f3-h\fR, \f3-t\fR, and \f3-J\fR)\&. The \f3statOption\fR must come first\&. |
| .PP |
| Output is formatted as a table, with columns that are separated by spaces\&. A header row with titles describes the columns\&. Use the \f3-h\fR option to set the frequency at which the header is displayed\&. Column header names are consistent among the different options\&. In general, if two options provide a column with the same name, then the data source for the two columns is the same\&. |
| .PP |
| Use the \f3-t\fR option to display a time stamp column, labeled Timestamp as the first column of output\&. The Timestamp column contains the elapsed time, in seconds, since the target JVM started\&. The resolution of the time stamp is dependent on various factors and is subject to variation due to delayed thread scheduling on heavily loaded systems\&. |
| .PP |
| Use the interval and count parameters to determine how frequently and how many times, respectively, the \f3jstat\fR command displays its output\&. |
| .PP |
| \fINote:\fR Do not to write scripts to parse the \f3jstat\fR command\&'s output because the format might change in future releases\&. If you write scripts that parse \f3jstat\fR command output, then expect to modify them for future releases of this tool\&. |
| .TP |
| -\fIstatOption\fR |
| .br |
| Determines the statistics information the \f3jstat\fR command displays\&. The following lists the available options\&. Use the \f3-options\fR general option to display the list of options for a particular platform installation\&. See Stat Options and Output\&. |
| |
| \f3class\fR: Displays statistics about the behavior of the class loader\&. |
| |
| \f3compiler\fR: Displays statistics about the behavior of the Java HotSpot VM Just-in-Time compiler\&. |
| |
| \f3gc\fR: Displays statistics about the behavior of the garbage collected heap\&. |
| |
| \f3gccapacity\fR: Displays statistics about the capacities of the generations and their corresponding spaces\&. |
| |
| \f3gccause\fR: Displays a summary about garbage collection statistics (same as \f3-gcutil\fR), with the cause of the last and current (when applicable) garbage collection events\&. |
| |
| \f3gcnew\fR: Displays statistics of the behavior of the new generation\&. |
| |
| \f3gcnewcapacity\fR: Displays statistics about the sizes of the new generations and its corresponding spaces\&. |
| |
| \f3gcold\fR: Displays statistics about the behavior of the old generation and Metaspace Statistics\&. |
| |
| \f3gcoldcapacity\fR: Displays statistics about the sizes of the old generation\&. |
| |
| \f3gcmetacapacity\fR: Displays statistics about the sizes of the metaspace\&. |
| |
| \f3gcutil\fR: Displays a summary about garbage collection statistics\&. |
| |
| \f3printcompilation\fR: Displays Java HotSpot VM compilation method statistics\&. |
| .TP |
| -h \fIn\fR |
| .br |
| Displays a column header every \fIn\fR samples (output rows), where \fIn\fR is a positive integer\&. Default value is 0, which displays the column header the first row of data\&. |
| .TP |
| -t |
| .br |
| Display sa timestamp column as the first column of output\&. The time stamp is the time since the start time of the target JVM\&. |
| .TP |
| -J\fIjavaOption\fR |
| .br |
| Passes \f3javaOption\fR to the Java application launcher\&. For example, \f3-J-Xms48m\fR sets the startup memory to 48 MB\&. For a complete list of options, see java(1)\&. |
| .SS STAT\ OPTIONS\ AND\ OUTPUT |
| The following information summarizes the columns that the \f3jstat\fR command outputs for each \fIstatOption\fR\&. |
| .TP |
| -class \fIoption\fR |
| .br |
| Class loader statistics\&. |
| |
| \f3Loaded\fR: Number of classes loaded\&. |
| |
| \f3Bytes\fR: Number of KBs loaded\&. |
| |
| \f3Unloaded\fR: Number of classes unloaded\&. |
| |
| \f3Bytes\fR: Number of Kbytes unloaded\&. |
| |
| \f3Time\fR: Time spent performing class loading and unloading operations\&. |
| .TP |
| -compiler \fIoption\fR |
| .br |
| Java HotSpot VM Just-in-Time compiler statistics\&. |
| |
| \f3Compiled\fR: Number of compilation tasks performed\&. |
| |
| \f3Failed\fR: Number of compilations tasks failed\&. |
| |
| \f3Invalid\fR: Number of compilation tasks that were invalidated\&. |
| |
| \f3Time\fR: Time spent performing compilation tasks\&. |
| |
| \f3FailedType\fR: Compile type of the last failed compilation\&. |
| |
| \f3FailedMethod\fR: Class name and method of the last failed compilation\&. |
| .TP |
| -gc \fIoption\fR |
| .br |
| Garbage-collected heap statistics\&. |
| |
| \f3S0C\fR: Current survivor space 0 capacity (KB)\&. |
| |
| \f3S1C\fR: Current survivor space 1 capacity (KB)\&. |
| |
| \f3S0U\fR: Survivor space 0 utilization (KB)\&. |
| |
| \f3S1U\fR: Survivor space 1 utilization (KB)\&. |
| |
| \f3EC\fR: Current eden space capacity (KB)\&. |
| |
| \f3EU\fR: Eden space utilization (KB)\&. |
| |
| \f3OC\fR: Current old space capacity (KB)\&. |
| |
| \f3OU\fR: Old space utilization (KB)\&. |
| |
| \f3MC\fR: Metaspace capacity (KB)\&. |
| |
| \f3MU\fR: Metacspace utilization (KB)\&. |
| |
| \f3YGC\fR: Number of young generation garbage collection events\&. |
| |
| \f3YGCT\fR: Young generation garbage collection time\&. |
| |
| \f3FGC\fR: Number of full GC events\&. |
| |
| \f3FGCT\fR: Full garbage collection time\&. |
| |
| \f3GCT\fR: Total garbage collection time\&. |
| .TP |
| -gccapacity \fIoption\fR |
| .br |
| Memory pool generation and space capacities\&. |
| |
| \f3NGCMN\fR: Minimum new generation capacity (KB)\&. |
| |
| \f3NGCMX\fR: Maximum new generation capacity (KB)\&. |
| |
| \f3NGC\fR: Current new generation capacity (KB)\&. |
| |
| \f3S0C\fR: Current survivor space 0 capacity (KB)\&. |
| |
| \f3S1C\fR: Current survivor space 1 capacity (KB)\&. |
| |
| \f3EC\fR: Current eden space capacity (KB)\&. |
| |
| \f3OGCMN\fR: Minimum old generation capacity (KB)\&. |
| |
| \f3OGCMX\fR: Maximum old generation capacity (KB)\&. |
| |
| \f3OGC\fR: Current old generation capacity (KB)\&. |
| |
| \f3OC\fR: Current old space capacity (KB)\&. |
| |
| \f3MCMN\fR: Minimum metaspace capacity (KB)\&. |
| |
| \f3MCMX\fR: Maximum metaspace capacity (KB)\&. |
| |
| \f3MC\fR: Metaspace capacity (KB)\&. |
| |
| \f3YGC\fR: Number of Young generation GC Events\&. |
| |
| \f3FGC\fR: Number of Full GC Events\&. |
| .TP |
| -gccause \fIoption\fR |
| .br |
| This option displays the same summary of garbage collection statistics as the \f3-gcutil\fR option, but includes the causes of the last garbage collection event and (when applicable) the current garbage collection event\&. In addition to the columns listed for \f3-gcutil\fR, this option adds the following columns\&. |
| |
| Garbage collection statistics, including garbage collection Events\&. |
| |
| \f3LGCC\fR: Cause of last garbage collection\&. |
| |
| \f3GCC\fR: Cause of current garbage collection\&. |
| .TP |
| -gcnew \fIoption\fR |
| .br |
| New generation statistics\&. |
| |
| \f3S0C\fR: Current survivor space 0 capacity (KB)\&. |
| |
| \f3S1C\fR: Current survivor space 1 capacity (KB)\&. |
| |
| \f3S0U\fR: Survivor space 0 utilization (KB)\&. |
| |
| \f3S1U\fR: Survivor space 1 utilization (KB)\&. |
| |
| \f3TT\fR: Tenuring threshold\&. |
| |
| \f3MTT\fR: Maximum tenuring threshold\&. |
| |
| \f3DSS\fR: Desired survivor size (KB)\&. |
| |
| \f3EC\fR: Current eden space capacity (KB)\&. |
| |
| \f3EU\fR: Eden space utilization (KB)\&. |
| |
| \f3YGC\fR: Number of young generation GC events\&. |
| |
| \f3YGCT\fR: Young generation garbage collection time\&. |
| .TP |
| -gcnewcapacity \fIoption\fR |
| .br |
| New generation space size statistics\&. |
| |
| NGCMN: Minimum new generation capacity (KB)\&. |
| |
| \f3NGCMX\fR: Maximum new generation capacity (KB)\&. |
| |
| \f3NGC\fR: Current new generation capacity (KB)\&. |
| |
| \f3S0CMX\fR: Maximum survivor space 0 capacity (KB)\&. |
| |
| \f3S0C\fR: Current survivor space 0 capacity (KB)\&. |
| |
| \f3S1CMX\fR: Maximum survivor space 1 capacity (KB)\&. |
| |
| \f3S1C\fR: Current survivor space 1 capacity (KB)\&. |
| |
| \f3ECMX\fR: Maximum eden space capacity (KB)\&. |
| |
| \f3EC\fR: Current eden space capacity (KB)\&. |
| |
| \f3YGC\fR: Number of young generation GC events\&. |
| |
| \f3FGC\fR: Number of Full GC Events\&. |
| .TP |
| -gcold \fIoption\fR |
| .br |
| old and permanent generation statistics\&. |
| |
| \f3MC\fR: Metaspace capacity (KB)\&. |
| |
| \f3MU\fR: Metaspace utilization (KB)\&. |
| |
| \f3OC\fR: Current old space capacity (KB)\&. |
| |
| \f3OU\fR: old space utilization (KB)\&. |
| |
| \f3YGC\fR: Number of young generation GC events\&. |
| |
| \f3FGC\fR: Number of full GC events\&. |
| |
| \f3FGCT\fR: Full garbage collection time\&. |
| |
| \f3GCT\fR: Total garbage collection time\&. |
| .TP |
| -gcoldcapacity \fIoption\fR |
| .br |
| Old generation statistics\&. |
| |
| \f3OGCMN\fR: Minimum old generation capacity (KB)\&. |
| |
| \f3OGCMX\fR: Maximum old generation capacity (KB)\&. |
| |
| \f3OGC\fR: Current old generation capacity (KB)\&. |
| |
| \f3OC\fR: Current old space capacity (KB)\&. |
| |
| \f3YGC\fR: Number of young generation GC events\&. |
| |
| \f3FGC\fR: Number of full GC events\&. |
| |
| \f3FGCT\fR: Full garbage collection time\&. |
| |
| \f3GCT\fR: Total garbage collection time\&. |
| .TP |
| -gcmetacapacity \fIoption\fR |
| .br |
| Permanent generation statistics\&. |
| |
| \f3MCMN\fR: Minimum metaspace capacity (KB)\&. |
| |
| \f3MCMX\fR: Maximum metaspace capacity (KB)\&. |
| |
| \f3MC\fR: Metaspace capacity (KB)\&. |
| |
| \f3YGC\fR: Number of young generation GC events\&. |
| |
| \f3FGC\fR: Number of full GC events\&. |
| |
| \f3FGCT\fR: Full garbage collection time\&. |
| |
| \f3GCT\fR: Total garbage collection time\&. |
| .TP |
| -gcutil \fIoption\fR |
| .br |
| Summary of garbage collection statistics\&. |
| |
| \f3S0\fR: Survivor space 0 utilization as a percentage of the space\&'s current capacity\&. |
| |
| \f3S1\fR: Survivor space 1 utilization as a percentage of the space\&'s current capacity\&. |
| |
| \f3E\fR: Eden space utilization as a percentage of the space\&'s current capacity\&. |
| |
| \f3O\fR: Old space utilization as a percentage of the space\&'s current capacity\&. |
| |
| \f3M\fR: Metaspace utilization as a percentage of the space\&'s current capacity\&. |
| |
| \f3YGC\fR: Number of young generation GC events\&. |
| |
| \f3YGCT\fR: Young generation garbage collection time\&. |
| |
| \f3FGC\fR: Number of full GC events\&. |
| |
| \f3FGCT\fR: Full garbage collection time\&. |
| |
| \f3GCT\fR: Total garbage collection time\&. |
| .TP |
| -printcompilation \fIoption\fR |
| .br |
| Java HotSpot VM compiler method statistics\&. |
| |
| \f3Compiled\fR: Number of compilation tasks performed by the most recently compiled method\&. |
| |
| \f3Size\fR: Number of bytes of byte code of the most recently compiled method\&. |
| |
| \f3Type\fR: Compilation type of the most recently compiled method\&. |
| |
| \f3Method\fR: Class name and method name identifying the most recently compiled method\&. Class name uses slash (/) instead of dot (\&.) as a name space separator\&. Method name is the method within the specified class\&. The format for these two fields is consistent with the HotSpot \f3-XX:+PrintComplation\fR option\&. |
| .SH EXAMPLES |
| This section presents some examples of monitoring a local JVM with an \fIlvmid\fR of 21891\&. |
| .SS THE\ GCUTIL\ OPTION |
| This example attaches to lvmid 21891 and takes 7 samples at 250 millisecond intervals and displays the output as specified by the -\f3gcutil\fR option\&. |
| .PP |
| The output of this example shows that a young generation collection occurred between the third and fourth sample\&. The collection took 0\&.001 seconds and promoted objects from the eden space (E) to the old space (O), resulting in an increase of old space utilization from 9\&.49% to 9\&.51%\&. Before the collection, the survivor space was 12\&.44% utilized, but after this collection it is only 7\&.74% utilized\&. |
| .sp |
| .nf |
| \f3jstat \-gcutil 21891 250 7\fP |
| .fi |
| .nf |
| \f3 S0 S1 E O M YGC YGCT FGC FGCT GCT\fP |
| .fi |
| .nf |
| \f30\&.00 99\&.74 13\&.49 7\&.86 95\&.82 3 0\&.124 0 0\&.000 0\&.124\fP |
| .fi |
| .nf |
| \f30\&.00 99\&.74 13\&.49 7\&.86 95\&.82 3 0\&.124 0 0\&.000 0\&.124\fP |
| .fi |
| .nf |
| \f30\&.00 99\&.74 13\&.49 7\&.86 95\&.82 3 0\&.124 0 0\&.000 0\&.124\fP |
| .fi |
| .nf |
| \f30\&.00 99\&.74 13\&.49 7\&.86 95\&.82 3 0\&.124 0 0\&.000 0\&.124\fP |
| .fi |
| .nf |
| \f30\&.00 99\&.74 13\&.80 7\&.86 95\&.82 3 0\&.124 0 0\&.000 0\&.124\fP |
| .fi |
| .nf |
| \f30\&.00 99\&.74 13\&.80 7\&.86 95\&.82 3 0\&.124 0 0\&.000 0\&.124\fP |
| .fi |
| .nf |
| \f30\&.00 99\&.74 13\&.80 7\&.86 95\&.82 3 0\&.124 0 0\&.000 0\&.124\fP |
| .fi |
| .nf |
| \f3\fP |
| .fi |
| .sp |
| .SS REPEAT\ THE\ COLUMN\ HEADER\ STRING |
| This example attaches to lvmid 21891 and takes samples at 250 millisecond intervals and displays the output as specified by \f3-gcutil\fR option\&. In addition, it uses the \f3-h3\fR option to output the column header after every 3 lines of data\&. |
| .PP |
| In addition to showing the repeating header string, this example shows that between the second and third samples, a young GC occurred\&. Its duration was 0\&.001 seconds\&. The collection found enough active data that the survivor space 0 utilization (S0U) would have exceeded the desired survivor Size (DSS)\&. As a result, objects were promoted to the old generation (not visible in this output), and the tenuring threshold (TT) was lowered from 31 to 2\&. |
| .PP |
| Another collection occurs between the fifth and sixth samples\&. This collection found very few survivors and returned the tenuring threshold to 31\&. |
| .sp |
| .nf |
| \f3jstat \-gcnew \-h3 21891 250\fP |
| .fi |
| .nf |
| \f3 S0C S1C S0U S1U TT MTT DSS EC EU YGC YGCT\fP |
| .fi |
| .nf |
| \f3 64\&.0 64\&.0 0\&.0 31\&.7 31 31 32\&.0 512\&.0 178\&.6 249 0\&.203\fP |
| .fi |
| .nf |
| \f3 64\&.0 64\&.0 0\&.0 31\&.7 31 31 32\&.0 512\&.0 355\&.5 249 0\&.203\fP |
| .fi |
| .nf |
| \f3 64\&.0 64\&.0 35\&.4 0\&.0 2 31 32\&.0 512\&.0 21\&.9 250 0\&.204\fP |
| .fi |
| .nf |
| \f3 S0C S1C S0U S1U TT MTT DSS EC EU YGC YGCT\fP |
| .fi |
| .nf |
| \f3 64\&.0 64\&.0 35\&.4 0\&.0 2 31 32\&.0 512\&.0 245\&.9 250 0\&.204\fP |
| .fi |
| .nf |
| \f3 64\&.0 64\&.0 35\&.4 0\&.0 2 31 32\&.0 512\&.0 421\&.1 250 0\&.204\fP |
| .fi |
| .nf |
| \f3 64\&.0 64\&.0 0\&.0 19\&.0 31 31 32\&.0 512\&.0 84\&.4 251 0\&.204\fP |
| .fi |
| .nf |
| \f3 S0C S1C S0U S1U TT MTT DSS EC EU YGC YGCT\fP |
| .fi |
| .nf |
| \f3 64\&.0 64\&.0 0\&.0 19\&.0 31 31 32\&.0 512\&.0 306\&.7 251 0\&.204\fP |
| .fi |
| .nf |
| \f3\fP |
| .fi |
| .sp |
| .SS INCLUDE\ A\ TIME\ STAMP\ FOR\ EACH\ SAMPLE |
| This example attaches to lvmid 21891 and takes 3 samples at 250 millisecond intervals\&. The \f3-t\fR option is used to generate a time stamp for each sample in the first column\&. |
| .PP |
| The Timestamp column reports the elapsed time in seconds since the start of the target JVM\&. In addition, the \f3-gcoldcapacity\fR output shows the old generation capacity (OGC) and the old space capacity (OC) increasing as the heap expands to meet allocation or promotion demands\&. The old generation capacity (OGC) has grown to from 11,696 KB to 13820 KB after the eighty-first full garbage collection (FGC)\&. The maximum capacity of the generation (and space) is 60,544 KB (OGCMX), so it still has room to expand\&. |
| .sp |
| .nf |
| \f3Timestamp OGCMN OGCMX OGC OC YGC FGC FGCT GCT\fP |
| .fi |
| .nf |
| \f3 150\&.1 1408\&.0 60544\&.0 11696\&.0 11696\&.0 194 80 2\&.874 3\&.799\fP |
| .fi |
| .nf |
| \f3 150\&.4 1408\&.0 60544\&.0 13820\&.0 13820\&.0 194 81 2\&.938 3\&.863\fP |
| .fi |
| .nf |
| \f3 150\&.7 1408\&.0 60544\&.0 13820\&.0 13820\&.0 194 81 2\&.938 3\&.863\fP |
| .fi |
| .nf |
| \f3\fP |
| .fi |
| .sp |
| .SS MONITOR\ INSTRUMENTATION\ FOR\ A\ REMOTE\ JVM |
| This example attaches to lvmid 40496 on the system named remote\&.domain using the \f3-gcutil\fR option, with samples taken every second indefinitely\&. |
| .PP |
| The lvmid is combined with the name of the remote host to construct a \fIvmid\fR of \f340496@remote\&.domain\fR\&. This vmid results in the use of the \f3rmi\fR protocol to communicate to the default \f3jstatd\fR server on the remote host\&. The \f3jstatd\fR server is located using the rmiregistry on \f3remote\&.domain\fR that is bound to the default rmiregistry port (port 1099)\&. |
| .sp |
| .nf |
| \f3jstat \-gcutil 40496@remote\&.domain 1000\fP |
| .fi |
| .nf |
| \f3\fI\&.\&.\&. output omitted\fR\fP |
| .fi |
| .nf |
| \f3\fP |
| .fi |
| .sp |
| .SH SEE\ ALSO |
| .TP 0.2i |
| \(bu |
| java(1) |
| .TP 0.2i |
| \(bu |
| jps(1) |
| .TP 0.2i |
| \(bu |
| jstatd(1) |
| .TP 0.2i |
| \(bu |
| rmiregistry(1) |
| .RE
|
| .br
|
| 'pl 8.5i
|
| 'bp
|