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. $STF_SUITE/tests/perf/perf.shlib 36 37command -v fio > /dev/null || log_unsupported "fio missing" 38 39function cleanup 40{ 41 # kill fio and iostat 42 pkill fio 43 pkill iostat 44 recreate_perf_pool 45} 46 47trap "log_fail \"Measure IO stats during random read load\"" SIGTERM 48log_onexit cleanup 49 50recreate_perf_pool 51populate_perf_filesystems 52 53# Make sure the working set can be cached in the arc. Aim for 1/2 of arc. 54export TOTAL_SIZE=$(($(get_max_arc_size) / 2)) 55 56# Variables specific to this test for use by fio. 57export PERF_NTHREADS=${PERF_NTHREADS:-'64 128'} 58export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'} 59export PERF_IOSIZES=${PERF_IOSIZES:-'128k'} 60export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'} 61 62# Layout the files to be used by the read tests. Create as many files as the 63# largest number of threads. An fio run with fewer threads will use a subset 64# of the available files. 65export NUMJOBS=$(get_max $PERF_NTHREADS) 66export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS)) 67export DIRECTORY=$(get_directory) 68log_must fio $FIO_SCRIPTS/mkfiles.fio 69 70# 71# Only a single filesystem is used by this test. To be defensive, we 72# double check that TESTFS only contains a single filesystem. We 73# wouldn't want to assume this was the case, and have it actually 74# contain multiple filesystem (causing cascading failures later). 75# 76log_must test $(get_nfilesystems) -eq 1 77 78log_note "Creating snapshot, $TESTSNAP, of $TESTFS" 79create_snapshot $TESTFS $TESTSNAP 80log_note "Creating clone, $PERFPOOL/$TESTCLONE, from $TESTFS@$TESTSNAP" 81create_clone $TESTFS@$TESTSNAP $PERFPOOL/$TESTCLONE 82 83# 84# We want to run FIO against the clone we created above, and not the 85# clone's originating filesystem. Thus, we override the default behavior 86# and explicitly set TESTFS to the clone. 87# 88export TESTFS=$PERFPOOL/$TESTCLONE 89 90# Set up the scripts and output files that will log performance data. 91lun_list=$(pool_to_lun_list $PERFPOOL) 92log_note "Collecting backend IO stats with lun list $lun_list" 93if is_linux; then 94 typeset perf_record_cmd="perf record -F 99 -a -g -q \ 95 -o /dev/stdout -- sleep ${PERF_RUNTIME}" 96 97 export collect_scripts=( 98 "zpool iostat -lpvyL $PERFPOOL 1" "zpool.iostat" 99 "$PERF_SCRIPTS/prefetch_io.sh $PERFPOOL 1" "prefetch" 100 "vmstat -t 1" "vmstat" 101 "mpstat -P ALL 1" "mpstat" 102 "iostat -tdxyz 1" "iostat" 103 "$perf_record_cmd" "perf" 104 ) 105else 106 export collect_scripts=( 107 "$PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io" 108 "$PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1" "prefetch" 109 "vmstat -T d 1" "vmstat" 110 "mpstat -T d 1" "mpstat" 111 "iostat -T d -xcnz 1" "iostat" 112 ) 113fi 114 115log_note "Sequential cached reads from $DIRECTORY with " \ 116 "ettings: $(print_perf_settings)" 117do_fio_run sequential_reads.fio false false 118log_pass "Measure IO stats during sequential cached read load" 119