Rev 2486: Add benchmarks for loading a knit index with a lot of records. in http://bzr.arbash-meinel.com/branches/bzr/0.17-dev/knit_index_pyrex
John Arbash Meinel
john at arbash-meinel.com
Wed May 9 16:12:36 BST 2007
At http://bzr.arbash-meinel.com/branches/bzr/0.17-dev/knit_index_pyrex
------------------------------------------------------------
revno: 2486
revision-id: john at arbash-meinel.com-20070509151224-20uys53nsfunfv5k
parent: john at arbash-meinel.com-20070509144042-9uyruriejyp98751
committer: John Arbash Meinel <john at arbash-meinel.com>
branch nick: knit_index_pyrex
timestamp: Wed 2007-05-09 10:12:24 -0500
message:
Add benchmarks for loading a knit index with a lot of records.
Because of (deterministic) variations, the benchmarks are run 2 times.
For some reason, the second run of a benchmark is approx 40ms faster,
and the 3rd run is slow again.
added:
bzrlib/benchmarks/bench_knit.py bench_knit.py-20070509145850-pan5jnd3hl7mfdya-1
modified:
bzrlib/benchmarks/__init__.py __init__.py-20060516064526-eb0d37c78e86065d
-------------- next part --------------
=== added file 'bzrlib/benchmarks/bench_knit.py'
--- a/bzrlib/benchmarks/bench_knit.py 1970-01-01 00:00:00 +0000
+++ b/bzrlib/benchmarks/bench_knit.py 2007-05-09 15:12:24 +0000
@@ -0,0 +1,90 @@
+# Copyright (C) 2007 Canonical Ltd
+#
+# 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
+
+"""Benchmarks for Knit performance"""
+
+import os
+
+from bzrlib import (
+ generate_ids,
+ knit,
+ tests,
+ )
+from bzrlib.benchmarks import Benchmark
+from bzrlib.tests.test_knit import CompiledKnitFeature
+
+
+class BenchKnitIndex(Benchmark):
+ """Benchmark Knit index performance."""
+
+ def create_10k_index(self):
+ """Create an knit index file with 10,000 entries.
+
+ This isn't super realistic, but it *is* big :)
+
+ The file 'test.kndx' will be created.
+ """
+ rev_id = generate_ids.gen_revision_id('long.name at this.example.com')
+ versions = [(rev_id, ('fulltext',), 0, 200, [])]
+ pos = 200
+ for i in xrange(9999):
+ parent_ids = [rev_id]
+ rev_id = generate_ids.gen_revision_id('long.name at this.example.com')
+ versions.append((rev_id, ('line-delta',), pos, 200, parent_ids))
+ pos += 200
+ t = self.get_transport()
+ kndx = knit._KnitIndex(t, 'test.kndx', 'w', create=True,
+ delay_create=True)
+ kndx.add_versions(versions)
+
+ def setup_load_data_c(self):
+ self.requireFeature(CompiledKnitFeature)
+ orig = knit._load_data
+ def reset():
+ knit._load_data = orig
+ self.addCleanup(reset)
+ knit._load_data = knit._load_data_c
+
+ def setup_load_data_py(self):
+ orig = knit._load_data
+ def reset():
+ knit._load_data = orig
+ self.addCleanup(reset)
+ knit._load_data = knit._load_data_py
+
+ def test_read_10k_index_c(self):
+ self.create_10k_index()
+ self.setup_load_data_c()
+ t = self.get_transport()
+ kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')
+
+ def test_read_10k_index_c_again(self):
+ self.create_10k_index()
+ self.setup_load_data_c()
+ t = self.get_transport()
+ kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')
+
+ def test_read_10k_index_py(self):
+ self.create_10k_index()
+ self.setup_load_data_py()
+ t = self.get_transport()
+ kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')
+
+ def test_read_10k_index_py_again(self):
+ self.create_10k_index()
+ self.setup_load_data_py()
+ t = self.get_transport()
+ kndx = self.time(knit._KnitIndex, t, 'test.kndx', 'r')
=== modified file 'bzrlib/benchmarks/__init__.py'
--- a/bzrlib/benchmarks/__init__.py 2006-10-16 01:25:46 +0000
+++ b/bzrlib/benchmarks/__init__.py 2007-05-09 15:12:24 +0000
@@ -179,6 +179,7 @@
'bzrlib.benchmarks.bench_commit',
'bzrlib.benchmarks.bench_info',
'bzrlib.benchmarks.bench_inventory',
+ 'bzrlib.benchmarks.bench_knit',
'bzrlib.benchmarks.bench_log',
'bzrlib.benchmarks.bench_osutils',
'bzrlib.benchmarks.bench_rocks',
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