summaryrefslogtreecommitdiffstats
path: root/scripts/buildstats-diff
blob: 8e64480eb3c01e649877746b0b7f47d8eed65775 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
#!/usr/bin/python3
#
# Script for comparing buildstats from two different builds
#
# Copyright (c) 2016, Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
import argparse
import glob
import json
import logging
import math
import os
import re
import sys
from collections import namedtuple
from operator import attrgetter

# Setup logging
logging.basicConfig(level=logging.INFO, format="%(levelname)s: %(message)s")
log = logging.getLogger()


class ScriptError(Exception):
    """Exception for internal error handling of this script"""
    pass


taskdiff_fields = ('pkg', 'pkg_op', 'task', 'task_op', 'value1', 'value2',
                   'absdiff', 'reldiff')
TaskDiff = namedtuple('TaskDiff', ' '.join(taskdiff_fields))


class BSTask(dict):
    def __init__(self, *args, **kwargs):
        self['start_time'] = None
        self['elapsed_time'] = None
        self['status'] = None
        self['iostat'] = {}
        self['rusage'] = {}
        self['child_rusage'] = {}
        super(BSTask, self).__init__(*args, **kwargs)

    @property
    def cputime(self):
        """Sum of user and system time taken by the task"""
        rusage = self['rusage']['ru_stime'] + self['rusage']['ru_utime']
        if self['child_rusage']:
            # Child rusage may have been optimized out
            return rusage + self['child_rusage']['ru_stime'] + self['child_rusage']['ru_utime']
        else:
            return rusage

    @property
    def walltime(self):
        """Elapsed wall clock time"""
        return self['elapsed_time']

    @property
    def read_bytes(self):
        """Bytes read from the block layer"""
        return self['iostat']['read_bytes']

    @property
    def write_bytes(self):
        """Bytes written to the block layer"""
        return self['iostat']['write_bytes']

    @property
    def read_ops(self):
        """Number of read operations on the block layer"""
        if self['child_rusage']:
            # Child rusage may have been optimized out
            return self['rusage']['ru_inblock'] + self['child_rusage']['ru_inblock']
        else:
            return self['rusage']['ru_inblock']

    @property
    def write_ops(self):
        """Number of write operations on the block layer"""
        if self['child_rusage']:
            # Child rusage may have been optimized out
            return self['rusage']['ru_oublock'] + self['child_rusage']['ru_oublock']
        else:
            return self['rusage']['ru_oublock']


def read_buildstats_file(buildstat_file):
    """Convert buildstat text file into dict/json"""
    bs_task = BSTask()
    log.debug("Reading task buildstats from %s", buildstat_file)
    end_time = None
    with open(buildstat_file) as fobj:
        for line in fobj.readlines():
            key, val = line.split(':', 1)
            val = val.strip()
            if key == 'Started':
                start_time = float(val)
                bs_task['start_time'] = start_time
            elif key == 'Ended':
                end_time = float(val)
            elif key.startswith('IO '):
                split = key.split()
                bs_task['iostat'][split[1]] = int(val)
            elif key.find('rusage') >= 0:
                split = key.split()
                ru_key = split[-1]
                if ru_key in ('ru_stime', 'ru_utime'):
                    val = float(val)
                else:
                    val = int(val)
                ru_type = 'rusage' if split[0] == 'rusage' else \
                                                  'child_rusage'
                bs_task[ru_type][ru_key] = val
            elif key == 'Status':
                bs_task['status'] = val
    if end_time is not None and start_time is not None:
        bs_task['elapsed_time'] = end_time - start_time
    else:
        raise ScriptError("{} looks like a invalid buildstats file".format(buildstat_file))
    return bs_task


def read_buildstats_dir(bs_dir):
    """Read buildstats directory"""
    def split_nevr(nevr):
        """Split name and version information from recipe "nevr" string"""
        n_e_v, revision = nevr.rsplit('-', 1)
        match = re.match(r'^(?P<name>\S+)-((?P<epoch>[0-9]{1,5})_)?(?P<version>[0-9]\S*)$',
                         n_e_v)
        if not match:
            # If we're not able to parse a version starting with a number, just
            # take the part after last dash
            match = re.match(r'^(?P<name>\S+)-((?P<epoch>[0-9]{1,5})_)?(?P<version>[^-]+)$',
                             n_e_v)
        name = match.group('name')
        version = match.group('version')
        epoch = match.group('epoch')
        return name, epoch, version, revision

    if not os.path.isfile(os.path.join(bs_dir, 'build_stats')):
        raise ScriptError("{} does not look like a buildstats directory".format(bs_dir))

    log.debug("Reading buildstats directory %s", bs_dir)

    buildstats = {}
    subdirs = os.listdir(bs_dir)
    for dirname in subdirs:
        recipe_dir = os.path.join(bs_dir, dirname)
        if not os.path.isdir(recipe_dir):
            continue
        name, epoch, version, revision = split_nevr(dirname)
        recipe_bs = {'nevr': dirname,
                     'name': name,
                     'epoch': epoch,
                     'version': version,
                     'revision': revision,
                     'tasks': {}}
        for task in os.listdir(recipe_dir):
            recipe_bs['tasks'][task] = [read_buildstats_file(
                    os.path.join(recipe_dir, task))]
        if name in buildstats:
            raise ScriptError("Cannot handle multiple versions of the same "
                              "package ({})".format(name))
        buildstats[name] = recipe_bs

    return buildstats


def bs_append(dst, src):
    """Append data from another buildstats"""
    if set(dst.keys()) != set(src.keys()):
        raise ScriptError("Refusing to join buildstats, set of packages is "
                          "different")
    for pkg, data in dst.items():
        if data['nevr'] != src[pkg]['nevr']:
            raise ScriptError("Refusing to join buildstats, package version "
                              "differs: {} vs. {}".format(data['nevr'], src[pkg]['nevr']))
        if set(data['tasks'].keys()) != set(src[pkg]['tasks'].keys()):
            raise ScriptError("Refusing to join buildstats, set of tasks "
                              "in {} differ".format(pkg))
        for taskname, taskdata in data['tasks'].items():
            taskdata.extend(src[pkg]['tasks'][taskname])


def read_buildstats_json(path):
    """Read buildstats from JSON file"""
    buildstats = {}
    with open(path) as fobj:
        bs_json = json.load(fobj)
    for recipe_bs in bs_json:
        if recipe_bs['name'] in buildstats:
            raise ScriptError("Cannot handle multiple versions of the same "
                              "package ({})".format(recipe_bs['name']))

        if recipe_bs['epoch'] is None:
            recipe_bs['nevr'] = "{}-{}-{}".format(recipe_bs['name'], recipe_bs['version'], recipe_bs['revision'])
        else:
            recipe_bs['nevr'] = "{}-{}_{}-{}".format(recipe_bs['name'], recipe_bs['epoch'], recipe_bs['version'], recipe_bs['revision'])

        for task, data in recipe_bs['tasks'].copy().items():
            recipe_bs['tasks'][task] = [BSTask(data)]

        buildstats[recipe_bs['name']] = recipe_bs

    return buildstats


def read_buildstats(path, multi):
    """Read buildstats"""
    if not os.path.exists(path):
        raise ScriptError("No such file or directory: {}".format(path))

    if os.path.isfile(path):
        return read_buildstats_json(path)

    if os.path.isfile(os.path.join(path, 'build_stats')):
        return read_buildstats_dir(path)

    # Handle a non-buildstat directory
    subpaths = sorted(glob.glob(path + '/*'))
    if len(subpaths) > 1:
        if multi:
            log.info("Averaging over {} buildstats from {}".format(
                     len(subpaths), path))
        else:
            raise ScriptError("Multiple buildstats found in '{}'. Please give "
                              "a single buildstat directory of use the --multi "
                              "option".format(path))
    bs = None
    for subpath in subpaths:
        if os.path.isfile(subpath):
            tmpbs = read_buildstats_json(subpath)
        else:
            tmpbs = read_buildstats_dir(subpath)
        if not bs:
            bs = tmpbs
        else:
            log.debug("Joining buildstats")
            bs_append(bs, tmpbs)

    if not bs:
        raise ScriptError("No buildstats found under {}".format(path))
    return bs


def print_ver_diff(bs1, bs2):
    """Print package version differences"""
    pkgs1 = set(bs1.keys())
    pkgs2 = set(bs2.keys())
    new_pkgs = pkgs2 - pkgs1
    deleted_pkgs = pkgs1 - pkgs2

    echanged = []
    vchanged = []
    rchanged = []
    unchanged = []
    common_pkgs = pkgs2.intersection(pkgs1)
    if common_pkgs:
        for pkg in common_pkgs:
            if bs1[pkg]['epoch'] != bs2[pkg]['epoch']:
                echanged.append(pkg)
            elif bs1[pkg]['version'] != bs2[pkg]['version']:
                vchanged.append(pkg)
            elif bs1[pkg]['revision'] != bs2[pkg]['revision']:
                rchanged.append(pkg)
            else:
                unchanged.append(pkg)

    maxlen = max([len(pkg) for pkg in pkgs1.union(pkgs2)])
    fmt_str = "  {:{maxlen}} ({})"
#    if unchanged:
#        print("\nUNCHANGED PACKAGES:")
#        print("-------------------")
#        maxlen = max([len(pkg) for pkg in unchanged])
#        for pkg in sorted(unchanged):
#            print(fmt_str.format(pkg, bs2[pkg]['nevr'], maxlen=maxlen))

    if new_pkgs:
        print("\nNEW PACKAGES:")
        print("-------------")
        for pkg in sorted(new_pkgs):
            print(fmt_str.format(pkg, bs2[pkg]['nevr'], maxlen=maxlen))

    if deleted_pkgs:
        print("\nDELETED PACKAGES:")
        print("-----------------")
        for pkg in sorted(deleted_pkgs):
            print(fmt_str.format(pkg, bs1[pkg]['nevr'], maxlen=maxlen))

    fmt_str = "  {0:{maxlen}} {1:<20}    ({2})"
    if rchanged:
        print("\nREVISION CHANGED:")
        print("-----------------")
        for pkg in sorted(rchanged):
            field1 = "{} -> {}".format(pkg, bs1[pkg]['revision'], bs2[pkg]['revision'])
            field2 = "{} -> {}".format(bs1[pkg]['nevr'], bs2[pkg]['nevr'])
            print(fmt_str.format(pkg, field1, field2, maxlen=maxlen))

    if vchanged:
        print("\nVERSION CHANGED:")
        print("----------------")
        for pkg in sorted(vchanged):
            field1 = "{} -> {}".format(bs1[pkg]['version'], bs2[pkg]['version'])
            field2 = "{} -> {}".format(bs1[pkg]['nevr'], bs2[pkg]['nevr'])
            print(fmt_str.format(pkg, field1, field2, maxlen=maxlen))

    if echanged:
        print("\nEPOCH CHANGED:")
        print("--------------")
        for pkg in sorted(echanged):
            field1 = "{} -> {}".format(bs1[pkg]['epoch'], bs2[pkg]['epoch'])
            field2 = "{} -> {}".format(bs1[pkg]['nevr'], bs2[pkg]['nevr'])
            print(fmt_str.format(pkg, field1, field2, maxlen=maxlen))


def print_task_diff(bs1, bs2, val_type, min_val=0, min_absdiff=0, sort_by=('absdiff',)):
    """Diff task execution times"""
    def val_to_str(val, human_readable=False):
        """Convert raw value to printable string"""
        def hms_time(secs):
            """Get time in human-readable HH:MM:SS format"""
            h = int(secs / 3600)
            m = int((secs % 3600) / 60)
            s = secs % 60
            if h == 0:
                return "{:02d}:{:04.1f}".format(m, s)
            else:
                return "{:d}:{:02d}:{:04.1f}".format(h, m, s)

        if 'time' in val_type:
            if human_readable:
                return hms_time(val)
            else:
                return "{:.1f}s".format(val)
        elif 'bytes' in val_type and human_readable:
                prefix = ['', 'Ki', 'Mi', 'Gi', 'Ti', 'Pi']
                dec = int(math.log(val, 2) / 10)
                prec = 1 if dec > 0 else 0
                return "{:.{prec}f}{}B".format(val / (2 ** (10 * dec)),
                                               prefix[dec], prec=prec)
        elif 'ops' in val_type and human_readable:
                prefix = ['', 'k', 'M', 'G', 'T', 'P']
                dec = int(math.log(val, 1000))
                prec = 1 if dec > 0 else 0
                return "{:.{prec}f}{}ops".format(val / (1000 ** dec),
                                                 prefix[dec], prec=prec)
        return str(int(val))

    def sum_vals(buildstats):
        """Get cumulative sum of all tasks"""
        total = 0.0
        for recipe_data in buildstats.values():
            for bs_task in recipe_data['tasks'].values():
                total += sum([getattr(b, val_type) for b in bs_task]) / len(bs_task)
        return total

    tasks_diff = []

    if min_val:
        print("Ignoring tasks less than {} ({})".format(
                val_to_str(min_val, True), val_to_str(min_val)))
    if min_absdiff:
        print("Ignoring differences less than {} ({})".format(
                val_to_str(min_absdiff, True), val_to_str(min_absdiff)))

    # Prepare the data
    pkgs = set(bs1.keys()).union(set(bs2.keys()))
    for pkg in pkgs:
        tasks1 = bs1[pkg]['tasks'] if pkg in bs1 else {}
        tasks2 = bs2[pkg]['tasks'] if pkg in bs2 else {}
        if not tasks1:
            pkg_op = '+ '
        elif not tasks2:
            pkg_op = '- '
        else:
            pkg_op = '  '

        for task in set(tasks1.keys()).union(set(tasks2.keys())):
            task_op = '  '
            if task in tasks1:
                # Average over all values
                val1 = [getattr(b, val_type) for b in bs1[pkg]['tasks'][task]]
                val1 = sum(val1) / len(val1)
            else:
                task_op = '+ '
                val1 = 0
            if task in tasks2:
                # Average over all values
                val2 = [getattr(b, val_type) for b in bs2[pkg]['tasks'][task]]
                val2 = sum(val2) / len(val2)
            else:
                val2 = 0
                task_op = '- '

            if val1 == 0:
                reldiff = float('inf')
            else:
                reldiff = 100 * (val2 - val1) / val1

            if max(val1, val2) < min_val:
                log.debug("Filtering out %s:%s (%s)", pkg, task,
                          val_to_str(max(val1, val2)))
                continue
            if abs(val2 - val1) < min_absdiff:
                log.debug("Filtering out %s:%s (difference of %s)", pkg, task,
                          val_to_str(val2-val1))
                continue
            tasks_diff.append(TaskDiff(pkg, pkg_op, task, task_op, val1, val2,
                                       val2-val1, reldiff))

    # Sort our list
    for field in reversed(sort_by):
        if field.startswith('-'):
            field = field[1:]
            reverse = True
        else:
            reverse = False
        tasks_diff = sorted(tasks_diff, key=attrgetter(field), reverse=reverse)

    linedata = [('  ', 'PKG', '  ', 'TASK', 'ABSDIFF', 'RELDIFF',
                val_type.upper() + '1', val_type.upper() + '2')]
    field_lens = dict([('len_{}'.format(i), len(f)) for i, f in enumerate(linedata[0])])

    # Prepare fields in string format and measure field lengths
    for diff in tasks_diff:
        task_prefix = diff.task_op if diff.pkg_op == '  ' else '  '
        linedata.append((diff.pkg_op, diff.pkg, task_prefix, diff.task,
                         val_to_str(diff.absdiff),
                         '{:+.1f}%'.format(diff.reldiff),
                         val_to_str(diff.value1),
                         val_to_str(diff.value2)))
        for i, field in enumerate(linedata[-1]):
            key = 'len_{}'.format(i)
            if len(field) > field_lens[key]:
                field_lens[key] = len(field)

    # Print data
    print()
    for fields in linedata:
        print("{:{len_0}}{:{len_1}}  {:{len_2}}{:{len_3}}  {:>{len_4}}  {:>{len_5}}  {:>{len_6}} -> {:{len_7}}".format(
                *fields, **field_lens))

    # Print summary of the diffs
    total1 = sum_vals(bs1)
    total2 = sum_vals(bs2)
    print("\nCumulative {}:".format(val_type))
    print ("  {}    {:+.1f}%    {} ({}) -> {} ({})".format(
                val_to_str(total2 - total1), 100 * (total2-total1) / total1,
                val_to_str(total1, True), val_to_str(total1),
                val_to_str(total2, True), val_to_str(total2)))


def parse_args(argv):
    """Parse cmdline arguments"""
    description="""
Script for comparing buildstats of two separate builds."""
    parser = argparse.ArgumentParser(
            formatter_class=argparse.ArgumentDefaultsHelpFormatter,
            description=description)

    min_val_defaults = {'cputime': 3.0,
                        'read_bytes': 524288,
                        'write_bytes': 524288,
                        'read_ops': 500,
                        'write_ops': 500,
                        'walltime': 5}
    min_absdiff_defaults = {'cputime': 1.0,
                            'read_bytes': 131072,
                            'write_bytes': 131072,
                            'read_ops': 50,
                            'write_ops': 50,
                            'walltime': 2}

    parser.add_argument('--debug', '-d', action='store_true',
                        help="Verbose logging")
    parser.add_argument('--ver-diff', action='store_true',
                        help="Show package version differences and exit")
    parser.add_argument('--diff-attr', default='cputime',
                        choices=min_val_defaults.keys(),
                        help="Buildstat attribute which to compare")
    parser.add_argument('--min-val', default=min_val_defaults, type=float,
                        help="Filter out tasks less than MIN_VAL. "
                             "Default depends on --diff-attr.")
    parser.add_argument('--min-absdiff', default=min_absdiff_defaults, type=float,
                        help="Filter out tasks whose difference is less than "
                             "MIN_ABSDIFF, Default depends on --diff-attr.")
    parser.add_argument('--sort-by', default='absdiff',
                        help="Comma-separated list of field sort order. "
                             "Prepend the field name with '-' for reversed sort. "
                             "Available fields are: {}".format(', '.join(taskdiff_fields)))
    parser.add_argument('--multi', action='store_true',
                        help="Read all buildstats from the given paths and "
                             "average over them")
    parser.add_argument('buildstats1', metavar='BUILDSTATS1', help="'Left' buildstat")
    parser.add_argument('buildstats2', metavar='BUILDSTATS2', help="'Right' buildstat")

    args = parser.parse_args(argv)

    # We do not nedd/want to read all buildstats if we just want to look at the
    # package versions
    if args.ver_diff:
        args.multi = False

    # Handle defaults for the filter arguments
    if args.min_val is min_val_defaults:
        args.min_val = min_val_defaults[args.diff_attr]
    if args.min_absdiff is min_absdiff_defaults:
        args.min_absdiff = min_absdiff_defaults[args.diff_attr]

    return args


def main(argv=None):
    """Script entry point"""
    args = parse_args(argv)
    if args.debug:
        log.setLevel(logging.DEBUG)

    # Validate sort fields
    sort_by = []
    for field in args.sort_by.split(','):
        if field.lstrip('-') not in taskdiff_fields:
            log.error("Invalid sort field '%s' (must be one of: %s)" %
                      (field, ', '.join(taskdiff_fields)))
            sys.exit(1)
        sort_by.append(field)

    try:
        bs1 = read_buildstats(args.buildstats1, args.multi)
        bs2 = read_buildstats(args.buildstats2, args.multi)

        if args.ver_diff:
            print_ver_diff(bs1, bs2)
        else:
            print_task_diff(bs1, bs2, args.diff_attr, args.min_val,
                            args.min_absdiff, sort_by)
    except ScriptError as err:
        log.error(str(err))
        return 1
    return 0

if __name__ == "__main__":
    sys.exit(main())