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
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.
15 # Copyright (c) 2016, 2021 by Delphix. All rights reserved.
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.
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.
27 # This is basically a copy of the sequential_reads_cached test case, but with
28 # a smaller dataset so that we can fit everything into the decompressed, linear
29 # space in the dbuf cache.
32 . $STF_SUITE/include/libtest.shlib
33 . $STF_SUITE/tests/perf/perf.shlib
43 trap "log_fail \"Measure IO stats during sequential read load\"" SIGTERM
47 populate_perf_filesystems
49 # Ensure the working set can be cached in the dbuf cache.
50 export TOTAL_SIZE=$(($(get_dbuf_cache_size) * 3 / 4))
52 # Variables specific to this test for use by fio.
53 export PERF_NTHREADS=${PERF_NTHREADS:-'64'}
54 export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'}
55 export PERF_IOSIZES=${PERF_IOSIZES:-'64k'}
56 export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'}
58 # Layout the files to be used by the read tests. Create as many files as the
59 # largest number of threads. An fio run with fewer threads will use a subset
60 # of the available files.
61 export NUMJOBS=$(get_max $PERF_NTHREADS)
62 export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS))
63 export DIRECTORY=$(get_directory)
64 log_must fio $FIO_SCRIPTS/mkfiles.fio
66 # Set up the scripts and output files that will log performance data.
67 lun_list=$(pool_to_lun_list $PERFPOOL)
68 log_note "Collecting backend IO stats with lun list $lun_list"
70 typeset perf_record_cmd="perf record -F 99 -a -g -q \
71 -o /dev/stdout -- sleep ${PERF_RUNTIME}"
73 export collect_scripts=(
74 "zpool iostat -lpvyL $PERFPOOL 1" "zpool.iostat"
75 "$PERF_SCRIPTS/prefetch_io.sh $PERFPOOL 1" "prefetch"
76 "vmstat -t 1" "vmstat"
77 "mpstat -P ALL 1" "mpstat"
78 "iostat -tdxyz 1" "iostat"
79 "$perf_record_cmd" "perf"
82 export collect_scripts=(
83 "kstat zfs:0 1" "kstat"
84 "vmstat -T d 1" "vmstat"
85 "mpstat -T d 1" "mpstat"
86 "iostat -T d -xcnz 1" "iostat"
87 "dtrace -Cs $PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io"
88 "dtrace -Cs $PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1" "prefetch"
89 "dtrace -s $PERF_SCRIPTS/profile.d" "profile"
93 log_note "Sequential cached reads with settings: $(print_perf_settings)"
94 do_fio_run sequential_reads.fio false false
95 log_pass "Measure IO stats during sequential cached read load"