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#!/usr/bin/env python
#
# Copyright 2014 Lars Wirzenius
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import json
import os
import cliapp
MiB = 2**20
GiB = 2**30
class ObnamBenchmarkSummary(cliapp.Application):
columns = (
('version', 'version'),
('ef-speed', 'EF files/s'),
('ef-repo-size', 'EF repo (MiB)'),
('lf-speed', 'LF MiB/s'),
('lf-repo-size', 'LF repo (MiB)'),
)
def process_args(self, args):
summaries = []
for dirname in args:
summary = self.summarise_directory(dirname)
summaries.append(summary)
self.show_summaries(summaries)
def summarise_directory(self, dirname):
filename = os.path.join(dirname, 'benchmark.json')
with open(filename) as f:
obj = json.load(f)
return {
'version':
self.get_obnam_version(obj),
'ef-speed':
'%.0f' % self.get_empty_files_speed(obj),
'ef-files':
self.get_empty_files_count(obj),
'ef-repo-size':
self.format_size(self.get_empty_files_repo_size(obj), MiB),
'lf-speed':
self.format_size(self.get_large_file_speed(obj), MiB),
'lf-size':
self.format_size(self.get_large_file_size(obj), GiB),
'lf-repo-size':
self.format_size(self.get_large_file_repo_size(obj), MiB),
}
def get_obnam_version(self, obj):
return obj['versions']['obnam-version']
def get_empty_files_speed(self, obj):
count = self.get_empty_files_count(obj)
step = self.find_step(obj, 'EmptyFiles', 'initial-backup')
return count / step['duration']
def get_empty_files_count(self, obj):
step = self.find_step(obj, 'EmptyFiles', 'create-live-data')
return step['empty-files-count']
def get_empty_files_repo_size(self, obj):
step = self.find_step(obj, 'EmptyFiles', 'initial-backup')
return step['repo-size']
def get_large_file_speed(self, obj):
file_size = self.get_large_file_size(obj)
step = self.find_step(obj, 'SingleLargeFile', 'initial-backup')
return file_size / step['duration']
def get_large_file_size(self, obj):
step = self.find_step(obj, 'SingleLargeFile', 'create-live-data')
return step['single-large-file-size']
def get_large_file_repo_size(self, obj):
step = self.find_step(obj, 'SingleLargeFile', 'initial-backup')
return step['repo-size']
def find_step(self, obj, benchmark_name, step_name):
for step in obj['benchmarks'][benchmark_name]['steps']:
if step['step'] == step_name:
return step
raise Exception('step %s not found' % step)
def format_size(self, size, unit):
return '%.0f' % (size / unit)
def show_summaries(self, summaries):
lines = [[title for key, title in self.columns]]
for s in summaries:
line = [str(s[key]) for key, title in self.columns]
lines.append(line)
widths = self.compute_column_widths(lines)
titles = lines[0]
results = sorted(lines[1:])
for line in [titles] + results:
cells = []
for i, cell in enumerate(line):
cells.append('%*s' % (widths[i], cell))
self.output.write(' | '.join(cells))
self.output.write('\n')
def compute_column_widths(self, lines):
widths = []
n = len(lines[0])
for col in range(n):
width = 0
for line in lines:
width = max(width, len(line[col]))
widths.append(width)
return widths
if __name__ == '__main__':
ObnamBenchmarkSummary().run()
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