1#!/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, 2021 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. $STF_SUITE/tests/perf/perf.shlib 36 37function cleanup 38{ 39 # kill fio and iostat 40 pkill fio 41 pkill iostat 42 recreate_perf_pool 43} 44 45trap "log_fail \"Measure IO stats during random read load\"" SIGTERM 46log_onexit cleanup 47 48recreate_perf_pool 49populate_perf_filesystems 50 51# Make sure the working set can be cached in the arc. Aim for 1/2 of arc. 52export TOTAL_SIZE=$(($(get_max_arc_size) / 2)) 53 54# Variables specific to this test for use by fio. 55export PERF_NTHREADS=${PERF_NTHREADS:-'64 128'} 56export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'} 57export PERF_IOSIZES=${PERF_IOSIZES:-'128k 1m'} 58 59# Layout the files to be used by the read tests. Create as many files as the 60# largest number of threads. An fio run with fewer threads will use a subset 61# of the available files. 62export NUMJOBS=$(get_max $PERF_NTHREADS) 63export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS)) 64export DIRECTORY=$(get_directory) 65log_must fio $FIO_SCRIPTS/mkfiles.fio 66 67# 68# Only a single filesystem is used by this test. To be defensive, we 69# double check that TESTFS only contains a single filesystem. We 70# wouldn't want to assume this was the case, and have it actually 71# contain multiple filesystem (causing cascading failures later). 72# 73log_must test $(get_nfilesystems) -eq 1 74 75log_note "Creating snapshot, $TESTSNAP, of $TESTFS" 76create_snapshot $TESTFS $TESTSNAP 77log_note "Creating clone, $PERFPOOL/$TESTCLONE, from $TESTFS@$TESTSNAP" 78create_clone $TESTFS@$TESTSNAP $PERFPOOL/$TESTCLONE 79 80# 81# We want to run FIO against the clone we created above, and not the 82# clone's originating filesystem. Thus, we override the default behavior 83# and explicitly set TESTFS to the clone. 84# 85export TESTFS=$PERFPOOL/$TESTCLONE 86 87# Set up the scripts and output files that will log performance data. 88lun_list=$(pool_to_lun_list $PERFPOOL) 89log_note "Collecting backend IO stats with lun list $lun_list" 90if is_linux; then 91 typeset perf_record_cmd="perf record -F 99 -a -g -q \ 92 -o /dev/stdout -- sleep ${PERF_RUNTIME}" 93 94 export collect_scripts=( 95 "zpool iostat -lpvyL $PERFPOOL 1" "zpool.iostat" 96 "$PERF_SCRIPTS/prefetch_io.sh $PERFPOOL 1" "prefetch" 97 "vmstat -t 1" "vmstat" 98 "mpstat -P ALL 1" "mpstat" 99 "iostat -tdxyz 1" "iostat" 100 "$perf_record_cmd" "perf" 101 ) 102else 103 export collect_scripts=( 104 "$PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io" 105 "$PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1" "prefetch" 106 "vmstat -T d 1" "vmstat" 107 "mpstat -T d 1" "mpstat" 108 "iostat -T d -xcnz 1" "iostat" 109 ) 110fi 111 112log_note "Sequential cached reads from $DIRECTORY with " \ 113 "ettings: $(print_perf_settings)" 114do_fio_run sequential_reads.fio false false 115log_pass "Measure IO stats during sequential cached read load" 116