1a223d3edSRui Paulo#!/usr/sbin/dtrace -s 2a223d3edSRui Paulo/* 3a223d3edSRui Paulo * Copyright (c) 2012 Robert N. M. Watson 4a223d3edSRui Paulo * All rights reserved. 5a223d3edSRui Paulo * 6a223d3edSRui Paulo * This software was developed at the University of Cambridge Computer 7a223d3edSRui Paulo * Laboratory with support from a grant from Google, Inc. 8a223d3edSRui Paulo * 9a223d3edSRui Paulo * Redistribution and use in source and binary forms, with or without 10a223d3edSRui Paulo * modification, are permitted provided that the following conditions 11a223d3edSRui Paulo * are met: 12a223d3edSRui Paulo * 1. Redistributions of source code must retain the above copyright 13a223d3edSRui Paulo * notice, this list of conditions and the following disclaimer. 14a223d3edSRui Paulo * 2. Redistributions in binary form must reproduce the above copyright 15a223d3edSRui Paulo * notice, this list of conditions and the following disclaimer in the 16a223d3edSRui Paulo * documentation and/or other materials provided with the distribution. 17a223d3edSRui Paulo * 18a223d3edSRui Paulo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19a223d3edSRui Paulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20a223d3edSRui Paulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21a223d3edSRui Paulo * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22a223d3edSRui Paulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23a223d3edSRui Paulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24a223d3edSRui Paulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25a223d3edSRui Paulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26a223d3edSRui Paulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27a223d3edSRui Paulo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28a223d3edSRui Paulo * SUCH DAMAGE. 29a223d3edSRui Paulo * 30a223d3edSRui Paulo * $FreeBSD$ 31a223d3edSRui Paulo * 32a223d3edSRui Paulo * This script measures all time spent waiting on RPC replies for each 33a223d3edSRui Paulo * system call, and then generates a histogram of those times sorted by 34a223d3edSRui Paulo * system call name. 35a223d3edSRui Paulo * 36a223d3edSRui Paulo * Currently only supports NFSv3 37a223d3edSRui Paulo * 38a223d3edSRui Paulo * Usage: nfsclienttime 39a223d3edSRui Paulo * 40a223d3edSRui Paulo * Press Ctrl-C to exit and display statistics. 41a223d3edSRui Paulo */ 42c94c8819SGeorge V. Neville-Neil 43c94c8819SGeorge V. Neville-Neil#pragma D option quiet 44c94c8819SGeorge V. Neville-Neil 45c94c8819SGeorge V. Neville-Neildtrace:::BEGIN 46c94c8819SGeorge V. Neville-Neil{ 47c94c8819SGeorge V. Neville-Neil printf("Collecting data...press Ctrl-C to exit.\n"); 48c94c8819SGeorge V. Neville-Neil} 49c94c8819SGeorge V. Neville-Neil 50c94c8819SGeorge V. Neville-Neilsyscall:::entry 51c94c8819SGeorge V. Neville-Neil{ 52c94c8819SGeorge V. Neville-Neil 53c94c8819SGeorge V. Neville-Neil self->count = 0; 54c94c8819SGeorge V. Neville-Neil} 55c94c8819SGeorge V. Neville-Neil 56*c1eb4109SGeorge V. Neville-Neilnfscl:nfs3::start 57c94c8819SGeorge V. Neville-Neil{ 58c94c8819SGeorge V. Neville-Neil 59c94c8819SGeorge V. Neville-Neil self->timestamp = timestamp; 60c94c8819SGeorge V. Neville-Neil} 61c94c8819SGeorge V. Neville-Neil 62*c1eb4109SGeorge V. Neville-Neilnfscl:nfs3::done 63c94c8819SGeorge V. Neville-Neil{ 64c94c8819SGeorge V. Neville-Neil 65c94c8819SGeorge V. Neville-Neil self->count += (timestamp - self->timestamp); 66c94c8819SGeorge V. Neville-Neil} 67c94c8819SGeorge V. Neville-Neil 68c94c8819SGeorge V. Neville-Neilsyscall:::return 69c94c8819SGeorge V. Neville-Neil/self->count != 0/ { 70c94c8819SGeorge V. Neville-Neil 71c94c8819SGeorge V. Neville-Neil @syscalls[probefunc] = quantize(self->count); 72c94c8819SGeorge V. Neville-Neil} 73