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# test_performance.py
# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
from __future__ import print_function
from io import BytesIO
from time import time
import sys
from .lib import TestBigRepoRW
from git import Commit
from gitdb import IStream
from git.compat import xrange
from git.test.test_commit import assert_commit_serialization
class TestPerformance(TestBigRepoRW):
def tearDown(self):
import gc
gc.collect()
# ref with about 100 commits in its history
ref_100 = '0.1.6'
def _query_commit_info(self, c):
c.author
c.authored_date
c.author_tz_offset
c.committer
c.committed_date
c.committer_tz_offset
c.message
c.parents
def test_iteration(self):
no = 0
nc = 0
# find the first commit containing the given path - always do a full
# iteration ( restricted to the path in question ), but in fact it should
# return quite a lot of commits, we just take one and hence abort the operation
st = time()
for c in self.rorepo.iter_commits(self.ref_100):
nc += 1
self._query_commit_info(c)
for obj in c.tree.traverse():
obj.size
no += 1
# END for each object
# END for each commit
elapsed_time = time() - st
print("Traversed %i Trees and a total of %i uncached objects in %s [s] ( %f objs/s )"
% (nc, no, elapsed_time, no / elapsed_time), file=sys.stderr)
def test_commit_traversal(self):
# bound to cat-file parsing performance
nc = 0
st = time()
for c in self.gitrorepo.commit().traverse(branch_first=False):
nc += 1
self._query_commit_info(c)
# END for each traversed commit
elapsed_time = time() - st
print("Traversed %i Commits in %s [s] ( %f commits/s )"
% (nc, elapsed_time, nc / elapsed_time), file=sys.stderr)
def test_commit_iteration(self):
# bound to stream parsing performance
nc = 0
st = time()
for c in Commit.iter_items(self.gitrorepo, self.gitrorepo.head):
nc += 1
self._query_commit_info(c)
# END for each traversed commit
elapsed_time = time() - st
print("Iterated %i Commits in %s [s] ( %f commits/s )"
% (nc, elapsed_time, nc / elapsed_time), file=sys.stderr)
def test_commit_serialization(self):
assert_commit_serialization(self.gitrwrepo, '58c78e6', True)
rwrepo = self.gitrwrepo
make_object = rwrepo.odb.store
# direct serialization - deserialization can be tested afterwards
# serialization is probably limited on IO
hc = rwrepo.commit(rwrepo.head)
nc = 5000
st = time()
for i in xrange(nc):
cm = Commit(rwrepo, Commit.NULL_BIN_SHA, hc.tree,
hc.author, hc.authored_date, hc.author_tz_offset,
hc.committer, hc.committed_date, hc.committer_tz_offset,
str(i), parents=hc.parents, encoding=hc.encoding)
stream = BytesIO()
cm._serialize(stream)
slen = stream.tell()
stream.seek(0)
cm.binsha = make_object(IStream(Commit.type, slen, stream)).binsha
# END commit creation
elapsed = time() - st
print("Serialized %i commits to loose objects in %f s ( %f commits / s )"
% (nc, elapsed, nc / elapsed), file=sys.stderr)