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