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. $STF_SUITE/tests/perf/perf.shlib
30
31command -v fio > /dev/null || log_unsupported "fio missing"
32
33function cleanup
34{
35	# kill fio and iostat
36	pkill fio
37	pkill iostat
38	recreate_perf_pool
39}
40
41trap "log_fail \"Measure IO stats during random read load\"" SIGTERM
42log_onexit cleanup
43
44recreate_perf_pool
45populate_perf_filesystems
46
47# Make sure the working set can be cached in the arc. Aim for 1/2 of arc.
48export TOTAL_SIZE=$(($(get_max_arc_size) / 2))
49
50# Variables specific to this test for use by fio.
51export PERF_NTHREADS=${PERF_NTHREADS:-'64 128'}
52export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'}
53export PERF_IOSIZES=${PERF_IOSIZES:-'128k'}
54export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'}
55
56# Layout the files to be used by the read tests. Create as many files as the
57# largest number of threads. An fio run with fewer threads will use a subset
58# of the available files.
59export NUMJOBS=$(get_max $PERF_NTHREADS)
60export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS))
61export DIRECTORY=$(get_directory)
62log_must fio $FIO_SCRIPTS/mkfiles.fio
63
64# Set up the scripts and output files that will log performance data.
65lun_list=$(pool_to_lun_list $PERFPOOL)
66log_note "Collecting backend IO stats with lun list $lun_list"
67if is_linux; then
68	typeset perf_record_cmd="perf record -F 99 -a -g -q \
69	    -o /dev/stdout -- sleep ${PERF_RUNTIME}"
70
71	export collect_scripts=(
72	    "zpool iostat -lpvyL $PERFPOOL 1" "zpool.iostat"
73	    "$PERF_SCRIPTS/prefetch_io.sh $PERFPOOL 1" "prefetch"
74	    "vmstat -t 1" "vmstat"
75	    "mpstat -P ALL 1" "mpstat"
76	    "iostat -tdxyz 1" "iostat"
77	    "$perf_record_cmd" "perf"
78	)
79else
80	export collect_scripts=(
81	    "$PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io"
82	    "$PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1" "prefetch"
83	    "vmstat -T d 1" "vmstat"
84	    "mpstat -T d 1" "mpstat"
85	    "iostat -T d -xcnz 1" "iostat"
86	)
87fi
88
89log_note "Sequential cached reads with settings: $(print_perf_settings)"
90do_fio_run sequential_reads.fio false false
91log_pass "Measure IO stats during sequential cached read load"
92