#!/usr/sbin/dtrace -s /* * dnlcps.d - DNLC stats by process. * Written in DTrace (Solaris 10 3/05). * * The DNLC is the Directory Name Lookup Cache. Filename lookups often * return a hit from here, before needing to traverse the regular file * system cache or go to disk. * * dnlcps.d prints DNLC statistics by process. * * $Id: dnlcps.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ * * USAGE: dnlcps.d # wait several seconds, then hit Ctrl-C * * FIELDS: * PID Process ID * CMD Command name * value 0 == miss, 1 == hit * count number of occurrences * * COPYRIGHT: Copyright (c) 2006 Brendan Gregg. * * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at Docs/cddl1.txt * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * CDDL HEADER END * * 27-Mar-2004 Brendan Gregg Created this. * 14-Jun-2005 " " Rewrote this a lot. * 18-Feb-2006 " " Last update. */ #pragma D option quiet /* * Print header */ dtrace:::BEGIN { printf("Tracing... Hit Ctrl-C to end.\n"); } /* * DNLC return */ fbt:genunix:dnlc_lookup:return { this->code = arg1 == 0 ? 0 : 1; @Result[execname, pid] = lquantize(this->code, 0, 1, 1); } /* * Print report */ dtrace:::END { printa(" CMD: %-16s PID: %d\n%@d\n", @Result); }