1#!/bin/sh 2# 3# Copyright (c) 2012 Robert N. M. Watson 4# All rights reserved. 5# 6# This software was developed at the University of Cambridge Computer 7# Laboratory with support from a grant from Google, Inc. 8# 9# Redistribution and use in source and binary forms, with or without 10# modification, are permitted provided that the following conditions 11# are met: 12# 1. Redistributions of source code must retain the above copyright 13# notice, this list of conditions and the following disclaimer. 14# 2. Redistributions in binary form must reproduce the above copyright 15# notice, this list of conditions and the following disclaimer in the 16# documentation and/or other materials provided with the distribution. 17# 18# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28# SUCH DAMAGE. 29# 30# $FreeBSD$ 31# 32# This script measures all time spent waiting on RPC replies for each 33# system call, and then generates a histogram of those times sorted by 34# system call name. 35# 36# Currently only supports NFSv3 37# 38# Usage: nfsclienttime 39# 40# Press Ctrl-C to exit and display statistics. 41# 42 43/usr/sbin/dtrace -n ' 44#pragma D option quiet 45 46dtrace:::BEGIN 47{ 48 printf("Collecting data...press Ctrl-C to exit.\n"); 49} 50 51syscall:::entry 52{ 53 54 self->count = 0; 55} 56 57nfsclient:nfs3::start 58{ 59 60 self->timestamp = timestamp; 61} 62 63nfsclient:nfs3::done 64{ 65 66 self->count += (timestamp - self->timestamp); 67} 68 69syscall:::return 70/self->count != 0/ { 71 72 @syscalls[probefunc] = quantize(self->count); 73} 74' 75