69 lines
1.6 KiB
D
Executable File
69 lines
1.6 KiB
D
Executable File
#!/usr/sbin/dtrace -s
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/*
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* dnlcps.d - DNLC stats by process.
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* Written in DTrace (Solaris 10 3/05).
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*
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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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*
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* dnlcps.d prints DNLC statistics by process.
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*
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* $Id: dnlcps.d 3 2007-08-01 10:50:08Z brendan $
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*
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* USAGE: dnlcps.d # wait several seconds, then hit Ctrl-C
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*
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* FIELDS:
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* PID Process ID
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* CMD Command name
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* value 0 == miss, 1 == hit
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* count number of occurrences
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*
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* COPYRIGHT: Copyright (c) 2006 Brendan Gregg.
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*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at Docs/cddl1.txt
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* CDDL HEADER END
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*
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* 27-Mar-2004 Brendan Gregg Created this.
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* 14-Jun-2005 " " Rewrote this a lot.
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* 18-Feb-2006 " " Last update.
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*/
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#pragma D option quiet
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/*
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* Print header
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*/
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dtrace:::BEGIN
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{
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printf("Tracing... Hit Ctrl-C to end.\n");
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}
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/*
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* DNLC return
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*/
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fbt:genunix:dnlc_lookup:return
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{
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this->code = arg1 == 0 ? 0 : 1;
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@Result[execname, pid] = lquantize(this->code, 0, 1, 1);
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}
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/*
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* Print report
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*/
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dtrace:::END
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{
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printa(" CMD: %-16s PID: %d\n%@d\n", @Result);
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}
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