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authorGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2017-07-01 18:07:00 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2017-07-01 18:07:00 +0200
commit7ca9fc3170de1a41fbcbc5dfdc2838c75bff72a5 (patch)
tree414aac66ba7b23b1f9e4beca5fa02bd83dd90202 /utils/size-stats-compare
parentafdb545b2847d2a922ee202775998d4658900fec (diff)
downloadbuildroot-7ca9fc3170de1a41fbcbc5dfdc2838c75bff72a5.tar.gz
buildroot-7ca9fc3170de1a41fbcbc5dfdc2838c75bff72a5.tar.bz2
tools: rename to 'utils'
After some discussion, we found out that "tools" has the four first letters identical to the "toolchain" subfolder, which makes it a bit unpractical with tab-completion. So, this commit renames "tools" to "utils", which is more tab-completion-friendly. This has been discussed with Arnout and Yann. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'utils/size-stats-compare')
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diff --git a/utils/size-stats-compare b/utils/size-stats-compare
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@@ -0,0 +1,127 @@
+#!/usr/bin/env python
+
+# Copyright (C) 2016 Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that 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.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+# TODO (improvements)
+# - support K,M,G size suffixes for threshold
+# - output CSV file in addition to stdout reporting
+
+import csv
+import argparse
+import sys
+
+def read_file_size_csv(inputf, detail=None):
+ """Extract package or file sizes from CSV file into size dictionary"""
+ sizes = {}
+ reader = csv.reader(inputf)
+
+ header = next(reader)
+ if (header[0] != 'File name' or header[1] != 'Package name' or
+ header[2] != 'File size' or header[3] != 'Package size'):
+ print(("Input file %s does not contain the expected header. Are you "
+ "sure this file corresponds to the file-size-stats.csv "
+ "file created by 'make graph-size'?") % inputf.name)
+ sys.exit(1)
+
+ for row in reader:
+ if detail:
+ sizes[row[0]] = int(row[2])
+ else:
+ sizes[row[1]] = int(row[3])
+
+ return sizes
+
+def compare_sizes(old, new):
+ """Return delta/added/removed dictionaries based on two input size
+ dictionaries"""
+ delta = {}
+ oldkeys = set(old.keys())
+ newkeys = set(new.keys())
+
+ # packages/files in both
+ for entry in newkeys.intersection(oldkeys):
+ delta[entry] = ('', new[entry] - old[entry])
+ # packages/files only in new
+ for entry in newkeys.difference(oldkeys):
+ delta[entry] = ('added', new[entry])
+ # packages/files only in old
+ for entry in oldkeys.difference(newkeys):
+ delta[entry] = ('removed', -old[entry])
+
+ return delta
+
+def print_results(result, threshold):
+ """Print the given result dictionary sorted by size, ignoring any entries
+ below or equal to threshold"""
+
+ from six import iteritems
+ list_result = list(iteritems(result))
+ # result is a dictionary: name -> (flag, size difference)
+ # list_result is a list of tuples: (name, (flag, size difference))
+
+ for entry in sorted(list_result, key=lambda entry: entry[1][1]):
+ if threshold is not None and abs(entry[1][1]) <= threshold:
+ continue
+ print('%12s %7s %s' % (entry[1][1], entry[1][0], entry[0]))
+
+
+# main #########################################################################
+
+description = """
+Compare rootfs size between Buildroot compilations, for example after changing
+configuration options or after switching to another Buildroot release.
+
+This script compares the file-size-stats.csv file generated by 'make graph-size'
+with the corresponding file from another Buildroot compilation.
+The size differences can be reported per package or per file.
+Size differences smaller or equal than a given threshold can be ignored.
+"""
+
+parser = argparse.ArgumentParser(description=description,
+ formatter_class=argparse.RawDescriptionHelpFormatter)
+
+parser.add_argument('-d', '--detail', action='store_true',
+ help='''report differences for individual files rather than
+ packages''')
+parser.add_argument('-t', '--threshold', type=int,
+ help='''ignore size differences smaller or equal than this
+ value (bytes)''')
+parser.add_argument('old_file_size_csv', type=argparse.FileType('r'),
+ metavar='old-file-size-stats.csv',
+ help="""old CSV file with file and package size statistics,
+ generated by 'make graph-size'""")
+parser.add_argument('new_file_size_csv', type=argparse.FileType('r'),
+ metavar='new-file-size-stats.csv',
+ help='new CSV file with file and package size statistics')
+args = parser.parse_args()
+
+if args.detail:
+ keyword = 'file'
+else:
+ keyword = 'package'
+
+old_sizes = read_file_size_csv(args.old_file_size_csv, args.detail)
+new_sizes = read_file_size_csv(args.new_file_size_csv, args.detail)
+
+delta = compare_sizes(old_sizes, new_sizes)
+
+print('Size difference per %s (bytes), threshold = %s' % (keyword, args.threshold))
+print(80*'-')
+print_results(delta, args.threshold)
+print(80*'-')
+print_results({'TOTAL': ('', sum(new_sizes.values()) - sum(old_sizes.values()))},
+ threshold=None)