2ec0a7d11c
This change adds inode tracking to the size-stats script so that hard links don't cause files to be double counted. This has a significant effect on the size computation for some packages. For example, git has around a dozen hard links to a large file. Before this change, git would weigh in at about 170 MB with the total filesystem size reported as 175 MB. The actual rootfs.ext2 size was around 16 MB. With the change, the git package registers at 10.5 MB with a total filesystem size of 15.8 MB. Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com> Acked-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
227 lines
8.0 KiB
Python
Executable File
227 lines
8.0 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (C) 2014 by Thomas Petazzoni <thomas.petazzoni@free-electrons.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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import sys
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import os
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import os.path
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import argparse
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import csv
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import collections
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try:
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import matplotlib
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matplotlib.use('Agg')
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import matplotlib.font_manager as fm
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import matplotlib.pyplot as plt
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except ImportError:
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sys.stderr.write("You need python-matplotlib to generate the size graph\n")
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exit(1)
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colors = ['#e60004', '#009836', '#2e1d86', '#ffed00',
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'#0068b5', '#f28e00', '#940084', '#97c000']
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#
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# This function adds a new file to 'filesdict', after checking its
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# size. The 'filesdict' contain the relative path of the file as the
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# key, and as the value a tuple containing the name of the package to
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# which the file belongs and the size of the file.
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#
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# filesdict: the dict to which the file is added
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# relpath: relative path of the file
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# fullpath: absolute path to the file
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# pkg: package to which the file belongs
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#
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def add_file(filesdict, relpath, abspath, pkg):
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if not os.path.exists(abspath):
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return
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if os.path.islink(abspath):
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return
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sz = os.stat(abspath).st_size
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filesdict[relpath] = (pkg, sz)
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#
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# This function returns a dict where each key is the path of a file in
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# the root filesystem, and the value is a tuple containing two
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# elements: the name of the package to which this file belongs and the
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# size of the file.
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#
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# builddir: path to the Buildroot output directory
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#
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def build_package_dict(builddir):
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filesdict = {}
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with open(os.path.join(builddir, "build", "packages-file-list.txt")) as filelistf:
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for l in filelistf.readlines():
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pkg, fpath = l.split(",", 1)
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# remove the initial './' in each file path
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fpath = fpath.strip()[2:]
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fullpath = os.path.join(builddir, "target", fpath)
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add_file(filesdict, fpath, fullpath, pkg)
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return filesdict
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#
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# This function builds a dictionary that contains the name of a
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# package as key, and the size of the files installed by this package
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# as the value.
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#
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# filesdict: dictionary with the name of the files as key, and as
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# value a tuple containing the name of the package to which the files
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# belongs, and the size of the file. As returned by
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# build_package_dict.
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#
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# builddir: path to the Buildroot output directory
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#
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def build_package_size(filesdict, builddir):
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pkgsize = collections.defaultdict(int)
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seeninodes = set()
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for root, _, files in os.walk(os.path.join(builddir, "target")):
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for f in files:
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fpath = os.path.join(root, f)
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if os.path.islink(fpath):
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continue
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st = os.stat(fpath)
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if st.st_ino in seeninodes:
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# hard link
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continue
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else:
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seeninodes.add(st.st_ino)
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frelpath = os.path.relpath(fpath, os.path.join(builddir, "target"))
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if not frelpath in filesdict:
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print("WARNING: %s is not part of any package" % frelpath)
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pkg = "unknown"
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else:
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pkg = filesdict[frelpath][0]
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pkgsize[pkg] += st.st_size
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return pkgsize
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#
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# Given a dict returned by build_package_size(), this function
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# generates a pie chart of the size installed by each package.
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#
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# pkgsize: dictionary with the name of the package as a key, and the
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# size as the value, as returned by build_package_size.
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#
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# outputf: output file for the graph
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#
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def draw_graph(pkgsize, outputf):
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total = sum(pkgsize.values())
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labels = []
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values = []
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other_value = 0
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for (p, sz) in pkgsize.items():
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if sz < (total * 0.01):
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other_value += sz
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else:
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labels.append("%s (%d kB)" % (p, sz / 1000.))
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values.append(sz)
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labels.append("Other (%d kB)" % (other_value / 1000.))
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values.append(other_value)
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plt.figure()
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patches, texts, autotexts = plt.pie(values, labels=labels,
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autopct='%1.1f%%', shadow=True,
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colors=colors)
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# Reduce text size
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proptease = fm.FontProperties()
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proptease.set_size('xx-small')
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plt.setp(autotexts, fontproperties=proptease)
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plt.setp(texts, fontproperties=proptease)
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plt.suptitle("Filesystem size per package", fontsize=18, y=.97)
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plt.title("Total filesystem size: %d kB" % (total / 1000.), fontsize=10, y=.96)
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plt.savefig(outputf)
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#
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# Generate a CSV file with statistics about the size of each file, its
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# size contribution to the package and to the overall system.
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#
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# filesdict: dictionary with the name of the files as key, and as
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# value a tuple containing the name of the package to which the files
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# belongs, and the size of the file. As returned by
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# build_package_dict.
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#
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# pkgsize: dictionary with the name of the package as a key, and the
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# size as the value, as returned by build_package_size.
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#
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# outputf: output CSV file
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#
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def gen_files_csv(filesdict, pkgsizes, outputf):
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total = 0
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for (p, sz) in pkgsizes.items():
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total += sz
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with open(outputf, 'w') as csvfile:
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wr = csv.writer(csvfile, delimiter=',', quoting=csv.QUOTE_MINIMAL)
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wr.writerow(["File name",
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"Package name",
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"File size",
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"Package size",
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"File size in package (%)",
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"File size in system (%)"])
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for f, (pkgname, filesize) in filesdict.items():
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pkgsize = pkgsizes[pkgname]
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wr.writerow([f, pkgname, filesize, pkgsize,
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"%.1f" % (float(filesize) / pkgsize * 100),
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"%.1f" % (float(filesize) / total * 100)])
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#
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# Generate a CSV file with statistics about the size of each package,
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# and their size contribution to the overall system.
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#
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# pkgsize: dictionary with the name of the package as a key, and the
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# size as the value, as returned by build_package_size.
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#
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# outputf: output CSV file
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#
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def gen_packages_csv(pkgsizes, outputf):
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total = sum(pkgsizes.values())
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with open(outputf, 'w') as csvfile:
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wr = csv.writer(csvfile, delimiter=',', quoting=csv.QUOTE_MINIMAL)
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wr.writerow(["Package name", "Package size", "Package size in system (%)"])
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for (pkg, size) in pkgsizes.items():
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wr.writerow([pkg, size, "%.1f" % (float(size) / total * 100)])
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parser = argparse.ArgumentParser(description='Draw size statistics graphs')
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parser.add_argument("--builddir", '-i', metavar="BUILDDIR", required=True,
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help="Buildroot output directory")
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parser.add_argument("--graph", '-g', metavar="GRAPH",
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help="Graph output file (.pdf or .png extension)")
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parser.add_argument("--file-size-csv", '-f', metavar="FILE_SIZE_CSV",
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help="CSV output file with file size statistics")
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parser.add_argument("--package-size-csv", '-p', metavar="PKG_SIZE_CSV",
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help="CSV output file with package size statistics")
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args = parser.parse_args()
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# Find out which package installed what files
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pkgdict = build_package_dict(args.builddir)
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# Collect the size installed by each package
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pkgsize = build_package_size(pkgdict, args.builddir)
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if args.graph:
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draw_graph(pkgsize, args.graph)
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if args.file_size_csv:
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gen_files_csv(pkgdict, pkgsize, args.file_size_csv)
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if args.package_size_csv:
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gen_packages_csv(pkgsize, args.package_size_csv)
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