usr/src/test/zfs-tests/tests/perf/regression/sequential_reads_dbuf_cached.ksh

   1 #!/usr/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) 2016 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 # This is basically a copy of the sequential_reads_cached test case, but with
  28 # a smaller dateset so that we can fit everything into the decompressed, linear
  29 # space in the dbuf cache.
  30 #
  31
  32 . $STF_SUITE/include/libtest.shlib
  33 . $STF_SUITE/tests/perf/perf.shlib
  34
  35 function cleanup
  36 {
  37         recreate_perf_pool
  38 }
  39
  40 log_onexit cleanup
  41
  42 recreate_perf_pool
  43 populate_perf_filesystems
  44
  45 # Ensure the working set can be cached in the dbuf cache.
  46 export TOTAL_SIZE=$(($(get_max_dbuf_cache_size) * 3 / 4))
  47
  48 # Variables for use by fio.
  49 if [[ -n $PERF_REGRESSION_WEEKLY ]]; then
  50         export PERF_RUNTIME=${PERF_RUNTIME:-$PERF_RUNTIME_WEEKLY}
  51         export PERF_RUNTYPE=${PERF_RUNTYPE:-'weekly'}
  52         export PERF_NTHREADS=${PERF_NTHREADS:-'16 64'}
  53         export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'}
  54         export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'}
  55         export PERF_IOSIZES=${PERF_IOSIZES:-'64k'}
  56 elif [[ -n $PERF_REGRESSION_NIGHTLY ]]; then
  57         export PERF_RUNTIME=${PERF_RUNTIME:-$PERF_RUNTIME_NIGHTLY}
  58         export PERF_RUNTYPE=${PERF_RUNTYPE:-'nightly'}
  59         export PERF_NTHREADS=${PERF_NTHREADS:-'64'}
  60         export PERF_NTHREADS_PER_FS=${PERF_NTHREADS_PER_FS:-'0'}
  61         export PERF_SYNC_TYPES=${PERF_SYNC_TYPES:-'1'}
  62         export PERF_IOSIZES=${PERF_IOSIZES:-'64k'}
  63 fi
  64
  65 # Layout the files to be used by the read tests. Create as many files as the
  66 # largest number of threads. An fio run with fewer threads will use a subset
  67 # of the available files.
  68 export NUMJOBS=$(get_max $PERF_NTHREADS)
  69 export FILE_SIZE=$((TOTAL_SIZE / NUMJOBS))
  70 export DIRECTORY=$(get_directory)
  71 log_must fio $FIO_SCRIPTS/mkfiles.fio
  72
  73 # Set up the scripts and output files that will log performance data.
  74 lun_list=$(pool_to_lun_list $PERFPOOL)
  75 log_note "Collecting backend IO stats with lun list $lun_list"
  76 export collect_scripts=(
  77     "kstat zfs:0 1"  "kstat"
  78     "vmstat 1"       "vmstat"
  79     "mpstat 1"       "mpstat"
  80     "iostat -xcnz 1" "iostat"
  81     "dtrace -Cs $PERF_SCRIPTS/io.d $PERFPOOL $lun_list 1" "io"
  82     "dtrace -Cs $PERF_SCRIPTS/prefetch_io.d $PERFPOOL 1"  "prefetch"
  83     "dtrace  -s $PERF_SCRIPTS/profile.d"                  "profile"
  84 )
  85
  86 log_note "Sequential cached reads with $PERF_RUNTYPE settings"
  87 do_fio_run sequential_reads.fio false false
  88 log_pass "Measure IO stats during sequential cached read load"