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58 lines
1.4 KiB
Plaintext
58 lines
1.4 KiB
Plaintext
.TH dnlcstat 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS"
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.SH NAME
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dnlcstat \- DNLC statistics. Uses DTrace.
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.SH SYNOPSIS
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.B dnlcstat
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[interval [count]]
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.SH DESCRIPTION
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The DNLC is the Directory Name Lookup Cache. Filename lookups often
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return a hit from here, before needing to traverse the regular file
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system cache or go to disk.
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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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Solaris
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.SH STABILITY
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unstable - this script uses fbt provider probes which may change for
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future updates of the OS, invalidating this script. Please read
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Docs/Notes/ALLfbt_notes.txt for further details about these fbt scripts.
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.SH EXAMPLES
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.TP
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Print DNLC statistics every second,
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#
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.B dnlcstat
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.TP
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Print every 5 seconds, 6 times,
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#
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.B dnlcstat
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5 6
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.PP
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.SH FIELDS
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.TP
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%hit
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hit percentage for this sample
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.TP
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hit
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number of DNLC hits in this sample
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.TP
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miss
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number of DNLC misses in this sample
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.PP
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.SH NOTES
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See the CacheKit, http://www.brendangregg.com/cachekit.html for a version
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of dnlcstat written in Perl (Kstat) that uses much less CPU.
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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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dnlcstat will run until Ctrl\-C is hit, or until the count argument
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has been satisfied.
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.SH AUTHOR
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Brendan Gregg
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[Sydney, Australia]
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.SH SEE ALSO
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dtrace(1M)
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