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, 2020 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 for use by fio.
55if [[ -n $PERF_REGRESSION_WEEKLY ]]; then
56	export PERF_RUNTIME=${PERF_RUNTIME:-$PERF_RUNTIME_WEEKLY}
57	export PERF_RANDSEED=${PERF_RANDSEED:-'1234'}
58	export PERF_COMPPERCENT=${PERF_COMPPERCENT:-'66'}
59	export PERF_COMPCHUNK=${PERF_COMPCHUNK:-'4096'}
60	export PERF_RUNTYPE=${PERF_RUNTYPE:-'weekly'}
61	export PERF_NTHREADS=${PERF_NTHREADS:-'8 16 32 64'}
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:-'8k 64k 128k'}
65elif [[ -n $PERF_REGRESSION_NIGHTLY ]]; then
66	export PERF_RUNTIME=${PERF_RUNTIME:-$PERF_RUNTIME_NIGHTLY}
67	export PERF_RANDSEED=${PERF_RANDSEED:-'1234'}
68	export PERF_COMPPERCENT=${PERF_COMPPERCENT:-'66'}
69	export PERF_COMPCHUNK=${PERF_COMPCHUNK:-'4096'}
70	export PERF_RUNTYPE=${PERF_RUNTYPE:-'nightly'}
71	export PERF_NTHREADS=${PERF_NTHREADS:-'64 128'}
72	export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'}
73	export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'}
74	export PERF_IOSIZES=${PERF_IOSIZES:-'128k 1m'}
75fi
76
77# Layout the files to be used by the read tests. Create as many files as the
78# largest number of threads. An fio run with fewer threads will use a subset
79# of the available files.
80export NUMJOBS=$(get_max $PERF_NTHREADS)
81export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS))
82export DIRECTORY=$(get_directory)
83log_must fio $FIO_SCRIPTS/mkfiles.fio
84
85#
86# Only a single filesystem is used by this test. To be defensive, we
87# double check that TESTFS only contains a single filesystem. We
88# wouldn't want to assume this was the case, and have it actually
89# contain multiple filesystem (causing cascading failures later).
90#
91log_must test $(get_nfilesystems) -eq 1
92
93log_note "Creating snapshot, $TESTSNAP, of $TESTFS"
94create_snapshot $TESTFS $TESTSNAP
95log_note "Creating clone, $PERFPOOL/$TESTCLONE, from $TESTFS@$TESTSNAP"
96create_clone $TESTFS@$TESTSNAP $PERFPOOL/$TESTCLONE
97
98#
99# We want to run FIO against the clone we created above, and not the
100# clone's originating filesystem. Thus, we override the default behavior
101# and explicitly set TESTFS to the clone.
102#
103export TESTFS=$PERFPOOL/$TESTCLONE
104
105# Set up the scripts and output files that will log performance data.
106lun_list=$(pool_to_lun_list $PERFPOOL)
107log_note "Collecting backend IO stats with lun list $lun_list"
108if is_linux; then
109	typeset perf_record_cmd="perf record -F 99 -a -g -q \
110	    -o /dev/stdout -- sleep ${PERF_RUNTIME}"
111
112	export collect_scripts=(
113	    "zpool iostat -lpvyL $PERFPOOL 1" "zpool.iostat"
114	    "$PERF_SCRIPTS/prefetch_io.sh $PERFPOOL 1" "prefetch"
115	    "vmstat -t 1" "vmstat"
116	    "mpstat -P ALL 1" "mpstat"
117	    "iostat -tdxyz 1" "iostat"
118	    "$perf_record_cmd" "perf"
119	)
120else
121	export collect_scripts=(
122	    "$PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io"
123	    "$PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1" "prefetch"
124	    "vmstat -T d 1" "vmstat"
125	    "mpstat -T d 1" "mpstat"
126	    "iostat -T d -xcnz 1" "iostat"
127	)
128fi
129
130log_note "Sequential cached reads from $DIRECTORY with $PERF_RUNTYPE settings"
131do_fio_run sequential_reads.fio false false
132log_pass "Measure IO stats during sequential cached read load"
133