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. The ARC is not cleared to ensure that all data is cached.
26#
27
28. $STF_SUITE/include/libtest.shlib
29. $STF_SUITE/tests/perf/perf.shlib
30
31function cleanup
32{
33	# kill fio and iostat
34	pkill fio
35	pkill iostat
36	recreate_perf_pool
37}
38
39trap "log_fail \"Measure IO stats during random read load\"" SIGTERM
40log_onexit cleanup
41
42recreate_perf_pool
43populate_perf_filesystems
44
45# Make sure the working set can be cached in the arc. Aim for 1/2 of arc.
46export TOTAL_SIZE=$(($(get_max_arc_size) / 2))
47
48# Variables specific to this test for use by fio.
49export PERF_NTHREADS=${PERF_NTHREADS:-'64 128'}
50export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'}
51export PERF_IOSIZES=${PERF_IOSIZES:-'128k'}
52export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'}
53
54# Layout the files to be used by the read tests. Create as many files as the
55# largest number of threads. An fio run with fewer threads will use a subset
56# of the available files.
57export NUMJOBS=$(get_max $PERF_NTHREADS)
58export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS))
59export DIRECTORY=$(get_directory)
60log_must fio $FIO_SCRIPTS/mkfiles.fio
61
62# Set up the scripts and output files that will log performance data.
63lun_list=$(pool_to_lun_list $PERFPOOL)
64log_note "Collecting backend IO stats with lun list $lun_list"
65if is_linux; then
66	typeset perf_record_cmd="perf record -F 99 -a -g -q \
67	    -o /dev/stdout -- sleep ${PERF_RUNTIME}"
68
69	export collect_scripts=(
70	    "zpool iostat -lpvyL $PERFPOOL 1" "zpool.iostat"
71	    "$PERF_SCRIPTS/prefetch_io.sh $PERFPOOL 1" "prefetch"
72	    "vmstat -t 1" "vmstat"
73	    "mpstat -P ALL 1" "mpstat"
74	    "iostat -tdxyz 1" "iostat"
75	    "$perf_record_cmd" "perf"
76	)
77else
78	export collect_scripts=(
79	    "$PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io"
80	    "$PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1" "prefetch"
81	    "vmstat -T d 1" "vmstat"
82	    "mpstat -T d 1" "mpstat"
83	    "iostat -T d -xcnz 1" "iostat"
84	)
85fi
86
87log_note "Sequential cached reads with settings: $(print_perf_settings)"
88do_fio_run sequential_reads.fio false false
89log_pass "Measure IO stats during sequential cached read load"
90