#!/usr/sbin/dtrace -s /* * nfswizard.d - nfs client activity wizard. * Written using DTrace (Solaris 10 3/05). * * This examines activity caused by NFS client processes on the same server * that you are running this script on. A detailed report is generated * to explain various details of NFS client activity, including response * times and file access. * * $Id: nfswizard.d,v 1.1.1.1 2015/09/30 22:01:06 christos Exp $ * * USAGE: nfswizard.d # hit Ctrl-C to end sample * * COPYRIGHT: Copyright (c) 2005, 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 * * 02-Dec-2005 Brendan Gregg Created this. * 20-Apr-2006 " " Last update. */ #pragma D option quiet dtrace:::BEGIN { printf("Tracing... Hit Ctrl-C to end.\n"); scriptstart = walltimestamp; timestart = timestamp; } io:nfs::start { /* tally file sizes */ @file[args[2]->fi_pathname] = sum(args[0]->b_bcount); /* time response */ start[args[0]->b_addr] = timestamp; /* overall stats */ @rbytes = sum(args[0]->b_flags & B_READ ? args[0]->b_bcount : 0); @wbytes = sum(args[0]->b_flags & B_READ ? 0 : args[0]->b_bcount); @events = count(); } io:nfs::done /start[args[0]->b_addr]/ { /* calculate and save response time stats */ this->elapsed = timestamp - start[args[0]->b_addr]; @maxtime = max(this->elapsed); @avgtime = avg(this->elapsed); @qnztime = quantize(this->elapsed / 1000); } dtrace:::END { /* print header */ printf("NFS Client Wizard. %Y -> %Y\n\n", scriptstart, walltimestamp); /* print read/write stats */ printa("Read: %@d bytes ", @rbytes); normalize(@rbytes, 1000000); printa("(%@d Mb)\n", @rbytes); printa("Write: %@d bytes ", @wbytes); normalize(@wbytes, 1000000); printa("(%@d Mb)\n\n", @wbytes); /* print throughput stats */ denormalize(@rbytes); normalize(@rbytes, (timestamp - timestart) / 1000000); printa("Read: %@d Kb/sec\n", @rbytes); denormalize(@wbytes); normalize(@wbytes, (timestamp - timestart) / 1000000); printa("Write: %@d Kb/sec\n\n", @wbytes); /* print time stats */ printa("NFS I/O events: %@d\n", @events); normalize(@avgtime, 1000000); printa("Avg response time: %@d ms\n", @avgtime); normalize(@maxtime, 1000000); printa("Max response time: %@d ms\n\n", @maxtime); printa("Response times (us):%@d\n", @qnztime); /* print file stats */ printf("Top 25 files accessed (bytes):\n"); printf(" %-64s %s\n", "PATHNAME", "BYTES"); trunc(@file, 25); printa(" %-64s %@d\n", @file); }