8c5afd120e
Leverage the CSV files produces by size-stats (make graph-size) to allow
for a comparison of rootfs size between two different buildroot
compilations.
The script takes the file-size CSV files of two compilations as input, and
produces a textual report of the differences per package.
Using the -d/--detail flag, the report will show the file size changes
instead of package size changes.
The -t/--threshold option allows to ignore file size differences smaller
or equal than the given threshold (in bytes).
Example output is:
Size difference per package (bytes), threshold = 0
--------------------------------------------------------------------------------
-8192 busybox
228572 added dmalloc
301584 added jq
--------------------------------------------------------------------------------
521964 TOTAL
or with detailed view:
Size difference per file (bytes), threshold = 0
--------------------------------------------------------------------------------
-8192 bin/busybox
18152 added usr/bin/jq
39252 added usr/bin/dmalloc
46968 added usr/lib/libdmalloc.so
47288 added usr/lib/libdmallocxx.so
47316 added usr/lib/libdmallocth.so
47748 added usr/lib/libdmallocthcxx.so
283432 added usr/lib/libjq.so.1.0.4
--------------------------------------------------------------------------------
521964 TOTAL
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
128 lines
4.8 KiB
Python
Executable File
128 lines
4.8 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (C) 2016 Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# TODO (improvements)
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# - support K,M,G size suffixes for threshold
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# - output CSV file in addition to stdout reporting
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import csv
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import argparse
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import sys
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def read_file_size_csv(inputf, detail=None):
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"""Extract package or file sizes from CSV file into size dictionary"""
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sizes = {}
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reader = csv.reader(inputf)
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header = next(reader)
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if (header[0] != 'File name' or header[1] != 'Package name' or
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header[2] != 'File size' or header[3] != 'Package size'):
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print(("Input file %s does not contain the expected header. Are you "
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"sure this file corresponds to the file-size-stats.csv "
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"file created by 'make graph-size'?") % inputf.name)
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sys.exit(1)
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for row in reader:
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if detail:
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sizes[row[0]] = int(row[2])
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else:
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sizes[row[1]] = int(row[3])
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return sizes
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def compare_sizes(old, new):
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"""Return delta/added/removed dictionaries based on two input size
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dictionaries"""
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delta = {}
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oldkeys = set(old.keys())
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newkeys = set(new.keys())
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# packages/files in both
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for entry in newkeys.intersection(oldkeys):
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delta[entry] = ('', new[entry] - old[entry])
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# packages/files only in new
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for entry in newkeys.difference(oldkeys):
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delta[entry] = ('added', new[entry])
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# packages/files only in old
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for entry in oldkeys.difference(newkeys):
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delta[entry] = ('removed', -old[entry])
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return delta
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def print_results(result, threshold):
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"""Print the given result dictionary sorted by size, ignoring any entries
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below or equal to threshold"""
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from six import iteritems
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list_result = list(iteritems(result))
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# result is a dictionary: name -> (flag, size difference)
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# list_result is a list of tuples: (name, (flag, size difference))
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for entry in sorted(list_result, key=lambda entry: entry[1][1]):
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if threshold is not None and abs(entry[1][1]) <= threshold:
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continue
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print('%12s %7s %s' % (entry[1][1], entry[1][0], entry[0]))
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# main #########################################################################
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description = """
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Compare rootfs size between Buildroot compilations, for example after changing
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configuration options or after switching to another Buildroot release.
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This script compares the file-size-stats.csv file generated by 'make graph-size'
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with the corresponding file from another Buildroot compilation.
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The size differences can be reported per package or per file.
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Size differences smaller or equal than a given threshold can be ignored.
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"""
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parser = argparse.ArgumentParser(description=description,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument('-d', '--detail', action='store_true',
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help='''report differences for individual files rather than
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packages''')
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parser.add_argument('-t', '--threshold', type=int,
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help='''ignore size differences smaller or equal than this
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value (bytes)''')
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parser.add_argument('old_file_size_csv', type=argparse.FileType('r'),
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metavar='old-file-size-stats.csv',
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help="""old CSV file with file and package size statistics,
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generated by 'make graph-size'""")
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parser.add_argument('new_file_size_csv', type=argparse.FileType('r'),
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metavar='new-file-size-stats.csv',
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help='new CSV file with file and package size statistics')
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args = parser.parse_args()
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if args.detail:
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keyword = 'file'
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else:
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keyword = 'package'
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old_sizes = read_file_size_csv(args.old_file_size_csv, args.detail)
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new_sizes = read_file_size_csv(args.new_file_size_csv, args.detail)
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delta = compare_sizes(old_sizes, new_sizes)
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print('Size difference per %s (bytes), threshold = %s' % (keyword, args.threshold))
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print(80*'-')
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print_results(delta, args.threshold)
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print(80*'-')
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print_results({'TOTAL': ('', sum(new_sizes.values()) - sum(old_sizes.values()))},
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threshold=None)
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