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54 lines
1.0 KiB
Plaintext
54 lines
1.0 KiB
Plaintext
.TH cpuwalk.d 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS"
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.SH NAME
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cpuwalk.d \- Measure which CPUs a process runs on. Uses DTrace.
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.SH SYNOPSIS
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.B cpuwalk.d [duration]
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.SH DESCRIPTION
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This program is for multi-CPU servers, and can help identify if a process
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is running on multiple CPUs concurrently or not.
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A duration may be specified in seconds.
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Since this uses DTrace, only the root user or users with the
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dtrace_kernel privilege can run this command.
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.SH OS
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Any
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.SH STABILITY
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stable.
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.SH EXAMPLES
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.TP
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this runs until Ctrl\-C is hit,
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#
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.B cpuwalk.d
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.PP
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.TP
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run for 5 seconds,
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#
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.B cpuwalk.d
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5
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.PP
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.SH FIELDS
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.TP
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PID
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process ID
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.TP
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CMD
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process name
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.TP
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value
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CPU id
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.TP
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count
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number of samples (sample at 100 hz)
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.PP
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.SH DOCUMENTATION
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See the DTraceToolkit for further documentation under the
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Docs directory. The DTraceToolkit docs may include full worked
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examples with verbose descriptions explaining the output.
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.SH EXIT
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cpuwalk.d will run until Ctrl\-C is hit, or the duration specified
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is reached.
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.SH SEE ALSO
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threaded.d(1M), dtrace(1M)
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