bench-backup.py (8046B)
1#!/usr/bin/env python3 2# 3# Bench backup block-job 4# 5# Copyright (c) 2020 Virtuozzo International GmbH. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21import argparse 22import json 23 24import simplebench 25from results_to_text import results_to_text 26from bench_block_job import bench_block_copy, drv_file, drv_nbd, drv_qcow2 27 28 29def bench_func(env, case): 30 """ Handle one "cell" of benchmarking table. """ 31 cmd_options = env['cmd-options'] if 'cmd-options' in env else {} 32 return bench_block_copy(env['qemu-binary'], env['cmd'], 33 cmd_options, 34 case['source'], case['target']) 35 36 37def bench(args): 38 test_cases = [] 39 40 # paths with colon not supported, so we just split by ':' 41 dirs = dict(d.split(':') for d in args.dir) 42 43 nbd_drv = None 44 if args.nbd: 45 nbd = args.nbd.split(':') 46 host = nbd[0] 47 port = '10809' if len(nbd) == 1 else nbd[1] 48 nbd_drv = drv_nbd(host, port) 49 50 for t in args.test: 51 src, dst = t.split(':') 52 53 if src == 'nbd' and dst == 'nbd': 54 raise ValueError("Can't use 'nbd' label for both src and dst") 55 56 if (src == 'nbd' or dst == 'nbd') and not nbd_drv: 57 raise ValueError("'nbd' label used but --nbd is not given") 58 59 if src == 'nbd': 60 source = nbd_drv 61 elif args.qcow2_sources: 62 source = drv_qcow2(drv_file(dirs[src] + '/test-source.qcow2')) 63 else: 64 source = drv_file(dirs[src] + '/test-source') 65 66 if dst == 'nbd': 67 test_cases.append({'id': t, 'source': source, 'target': nbd_drv}) 68 continue 69 70 if args.target_cache == 'both': 71 target_caches = ['direct', 'cached'] 72 else: 73 target_caches = [args.target_cache] 74 75 for c in target_caches: 76 o_direct = c == 'direct' 77 fname = dirs[dst] + '/test-target' 78 if args.compressed: 79 fname += '.qcow2' 80 target = drv_file(fname, o_direct=o_direct) 81 if args.compressed: 82 target = drv_qcow2(target) 83 84 test_id = t 85 if args.target_cache == 'both': 86 test_id += f'({c})' 87 88 test_cases.append({'id': test_id, 'source': source, 89 'target': target}) 90 91 binaries = [] # list of (<label>, <path>, [<options>]) 92 for i, q in enumerate(args.env): 93 name_path = q.split(':') 94 if len(name_path) == 1: 95 label = f'q{i}' 96 path_opts = name_path[0].split(',') 97 else: 98 assert len(name_path) == 2 # paths with colon not supported 99 label = name_path[0] 100 path_opts = name_path[1].split(',') 101 102 binaries.append((label, path_opts[0], path_opts[1:])) 103 104 test_envs = [] 105 106 bin_paths = {} 107 for i, q in enumerate(args.env): 108 opts = q.split(',') 109 label_path = opts[0] 110 opts = opts[1:] 111 112 if ':' in label_path: 113 # path with colon inside is not supported 114 label, path = label_path.split(':') 115 bin_paths[label] = path 116 elif label_path in bin_paths: 117 label = label_path 118 path = bin_paths[label] 119 else: 120 path = label_path 121 label = f'q{i}' 122 bin_paths[label] = path 123 124 x_perf = {} 125 is_mirror = False 126 for opt in opts: 127 if opt == 'mirror': 128 is_mirror = True 129 elif opt == 'copy-range=on': 130 x_perf['use-copy-range'] = True 131 elif opt == 'copy-range=off': 132 x_perf['use-copy-range'] = False 133 elif opt.startswith('max-workers='): 134 x_perf['max-workers'] = int(opt.split('=')[1]) 135 136 backup_options = {} 137 if x_perf: 138 backup_options['x-perf'] = x_perf 139 140 if args.compressed: 141 backup_options['compress'] = True 142 143 if is_mirror: 144 assert not x_perf 145 test_envs.append({ 146 'id': f'mirror({label})', 147 'cmd': 'blockdev-mirror', 148 'qemu-binary': path 149 }) 150 else: 151 test_envs.append({ 152 'id': f'backup({label})\n' + '\n'.join(opts), 153 'cmd': 'blockdev-backup', 154 'cmd-options': backup_options, 155 'qemu-binary': path 156 }) 157 158 result = simplebench.bench(bench_func, test_envs, test_cases, 159 count=args.count, initial_run=args.initial_run, 160 drop_caches=args.drop_caches) 161 with open('results.json', 'w') as f: 162 json.dump(result, f, indent=4) 163 print(results_to_text(result)) 164 165 166class ExtendAction(argparse.Action): 167 def __call__(self, parser, namespace, values, option_string=None): 168 items = getattr(namespace, self.dest) or [] 169 items.extend(values) 170 setattr(namespace, self.dest, items) 171 172 173if __name__ == '__main__': 174 p = argparse.ArgumentParser('Backup benchmark', epilog=''' 175ENV format 176 177 (LABEL:PATH|LABEL|PATH)[,max-workers=N][,use-copy-range=(on|off)][,mirror] 178 179 LABEL short name for the binary 180 PATH path to the binary 181 max-workers set x-perf.max-workers of backup job 182 use-copy-range set x-perf.use-copy-range of backup job 183 mirror use mirror job instead of backup''', 184 formatter_class=argparse.RawTextHelpFormatter) 185 p.add_argument('--env', nargs='+', help='''\ 186Qemu binaries with labels and options, see below 187"ENV format" section''', 188 action=ExtendAction) 189 p.add_argument('--dir', nargs='+', help='''\ 190Directories, each containing "test-source" and/or 191"test-target" files, raw images to used in 192benchmarking. File path with label, like 193label:/path/to/directory''', 194 action=ExtendAction) 195 p.add_argument('--nbd', help='''\ 196host:port for remote NBD image, (or just host, for 197default port 10809). Use it in tests, label is "nbd" 198(but you cannot create test nbd:nbd).''') 199 p.add_argument('--test', nargs='+', help='''\ 200Tests, in form source-dir-label:target-dir-label''', 201 action=ExtendAction) 202 p.add_argument('--compressed', help='''\ 203Use compressed backup. It automatically means 204automatically creating qcow2 target with 205lazy_refcounts for each test run''', action='store_true') 206 p.add_argument('--qcow2-sources', help='''\ 207Use test-source.qcow2 images as sources instead of 208test-source raw images''', action='store_true') 209 p.add_argument('--target-cache', help='''\ 210Setup cache for target nodes. Options: 211 direct: default, use O_DIRECT and aio=native 212 cached: use system cache (Qemu default) and aio=threads (Qemu default) 213 both: generate two test cases for each src:dst pair''', 214 default='direct', choices=('direct', 'cached', 'both')) 215 216 p.add_argument('--count', type=int, default=3, help='''\ 217Number of test runs per table cell''') 218 219 # BooleanOptionalAction helps to support --no-initial-run option 220 p.add_argument('--initial-run', action=argparse.BooleanOptionalAction, 221 help='''\ 222Do additional initial run per cell which doesn't count in result, 223default true''') 224 225 p.add_argument('--drop-caches', action='store_true', help='''\ 226Do "sync; echo 3 > /proc/sys/vm/drop_caches" before each test run''') 227 228 bench(p.parse_args())