1267924Srpaulo#!/usr/sbin/dtrace -s 2267924Srpaulo/* 3267924Srpaulo * Copyright (c) 2012 Robert N. M. Watson 4267924Srpaulo * All rights reserved. 5267924Srpaulo * 6267924Srpaulo * This software was developed at the University of Cambridge Computer 7267924Srpaulo * Laboratory with support from a grant from Google, Inc. 8267924Srpaulo * 9267924Srpaulo * Redistribution and use in source and binary forms, with or without 10267924Srpaulo * modification, are permitted provided that the following conditions 11267924Srpaulo * are met: 12267924Srpaulo * 1. Redistributions of source code must retain the above copyright 13267924Srpaulo * notice, this list of conditions and the following disclaimer. 14267924Srpaulo * 2. Redistributions in binary form must reproduce the above copyright 15267924Srpaulo * notice, this list of conditions and the following disclaimer in the 16267924Srpaulo * documentation and/or other materials provided with the distribution. 17267924Srpaulo * 18267924Srpaulo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19267924Srpaulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20267924Srpaulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21267924Srpaulo * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22267924Srpaulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23267924Srpaulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24267924Srpaulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25267924Srpaulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26267924Srpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27267924Srpaulo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28267924Srpaulo * SUCH DAMAGE. 29267924Srpaulo * 30267924Srpaulo * $FreeBSD$ 31267924Srpaulo * 32267924Srpaulo * This script measures all time spent waiting on RPC replies for each 33267924Srpaulo * system call, and then generates a histogram of those times sorted by 34267924Srpaulo * system call name. 35267924Srpaulo * 36267924Srpaulo * Currently only supports NFSv3 37267924Srpaulo * 38267924Srpaulo * Usage: nfsclienttime 39267924Srpaulo * 40267924Srpaulo * Press Ctrl-C to exit and display statistics. 41267924Srpaulo */ 42235614Sgnn 43235614Sgnn#pragma D option quiet 44235614Sgnn 45235614Sgnndtrace:::BEGIN 46235614Sgnn{ 47235614Sgnn printf("Collecting data...press Ctrl-C to exit.\n"); 48235614Sgnn} 49235614Sgnn 50235614Sgnnsyscall:::entry 51235614Sgnn{ 52235614Sgnn 53235614Sgnn self->count = 0; 54235614Sgnn} 55235614Sgnn 56287544Sgnnnfscl:nfs3::start 57235614Sgnn{ 58235614Sgnn 59235614Sgnn self->timestamp = timestamp; 60235614Sgnn} 61235614Sgnn 62287544Sgnnnfscl:nfs3::done 63235614Sgnn{ 64235614Sgnn 65235614Sgnn self->count += (timestamp - self->timestamp); 66235614Sgnn} 67235614Sgnn 68235614Sgnnsyscall:::return 69235614Sgnn/self->count != 0/ { 70235614Sgnn 71235614Sgnn @syscalls[probefunc] = quantize(self->count); 72235614Sgnn} 73