1#!/usr/bin/ksh 2 3# 4# This file and its contents are supplied under the terms of the 5# Common Development and Distribution License ("CDDL"), version 1.0. 6# You may only use this file in accordance with the terms of version 7# 1.0 of the CDDL. 8# 9# A full copy of the text of the CDDL should have accompanied this 10# source. A copy of the CDDL is also available via the Internet at 11# http://www.illumos.org/license/CDDL. 12# 13 14# 15# Copyright (c) 2015, 2016 by Delphix. All rights reserved. 16# 17 18# 19# Description: 20# Trigger fio runs using the sequential_reads job file. The number of runs and 21# data collected is determined by the PERF_* variables. See do_fio_run for 22# details about these variables. 23# 24# The files to read from are created prior to the first fio run, and used 25# for all fio runs. This test will exercise cached read performance from 26# a clone filesystem. The data is initially cached in the ARC and then 27# a snapshot and clone are created. All the performance runs are then 28# initiated against the clone filesystem to exercise the performance of 29# reads when the ARC has to create another buffer from a different dataset. 30# It will also exercise the need to evict the duplicate buffer once the last 31# reference on that buffer is released. 32# 33 34. $STF_SUITE/include/libtest.shlib 35. $STF_SUITE/tests/perf/perf.shlib 36 37function cleanup 38{ 39 recreate_perf_pool 40} 41 42log_onexit cleanup 43 44recreate_perf_pool 45populate_perf_filesystems 46 47# Make sure the working set can be cached in the arc. Aim for 1/2 of arc. 48export TOTAL_SIZE=$(($(get_max_arc_size) / 2)) 49 50# Variables for use by fio. 51if [[ -n $PERF_REGRESSION_WEEKLY ]]; then 52 export PERF_RUNTIME=${PERF_RUNTIME:-$PERF_RUNTIME_WEEKLY} 53 export PERF_RUNTYPE=${PERF_RUNTYPE:-'weekly'} 54 export PERF_NTHREADS=${PERF_NTHREADS:-'8 16 32 64'} 55 export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'} 56 export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'} 57 export PERF_IOSIZES=${PERF_IOSIZES:-'8k 64k 128k'} 58elif [[ -n $PERF_REGRESSION_NIGHTLY ]]; then 59 export PERF_RUNTIME=${PERF_RUNTIME:-$PERF_RUNTIME_NIGHTLY} 60 export PERF_RUNTYPE=${PERF_RUNTYPE:-'nightly'} 61 export PERF_NTHREADS=${PERF_NTHREADS:-'64 128'} 62 export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'} 63 export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'} 64 export PERF_IOSIZES=${PERF_IOSIZES:-'128k 1m'} 65fi 66 67# Layout the files to be used by the read tests. Create as many files as the 68# largest number of threads. An fio run with fewer threads will use a subset 69# of the available files. 70export NUMJOBS=$(get_max $PERF_NTHREADS) 71export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS)) 72export DIRECTORY=$(get_directory) 73log_must fio $FIO_SCRIPTS/mkfiles.fio 74 75# 76# Only a single filesystem is used by this test. To be defensive, we 77# double check that TESTFS only contains a single filesystem. We 78# wouldn't want to assume this was the case, and have it actually 79# contain multiple filesystem (causing cascading failures later). 80# 81log_must test $(get_nfilesystems) -eq 1 82 83log_note "Creating snapshot, $TESTSNAP, of $TESTFS" 84create_snapshot $TESTFS $TESTSNAP 85log_note "Creating clone, $PERFPOOL/$TESTCLONE, from $TESTFS@$TESTSNAP" 86create_clone $TESTFS@$TESTSNAP $PERFPOOL/$TESTCLONE 87 88# 89# We want to run FIO against the clone we created above, and not the 90# clone's originating filesystem. Thus, we override the default behavior 91# and explicitly set TESTFS to the clone. 92# 93export TESTFS=$PERFPOOL/$TESTCLONE 94 95# Set up the scripts and output files that will log performance data. 96lun_list=$(pool_to_lun_list $PERFPOOL) 97log_note "Collecting backend IO stats with lun list $lun_list" 98export collect_scripts=( 99 "kstat zfs:0 1" "kstat" 100 "vmstat -T d 1" "vmstat" 101 "mpstat -T d 1" "mpstat" 102 "iostat -T d -xcnz 1" "iostat" 103 "dtrace -Cs $PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io" 104 "dtrace -Cs $PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1" "prefetch" 105 "dtrace -s $PERF_SCRIPTS/profile.d" "profile" 106) 107 108log_note "Sequential cached reads from $DIRECTORY with $PERF_RUNTYPE settings" 109do_fio_run sequential_reads.fio false false 110log_pass "Measure IO stats during sequential cached read load" 111