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  • Committer: John Arbash Meinel
  • Date: 2010-08-27 17:53:08 UTC
  • mfrom: (5390 +trunk)
  • mto: This revision was merged to the branch mainline in revision 5393.
  • Revision ID: john@arbash-meinel.com-20100827175308-qsvcc11dkfvkrny1
Merge bzr.dev 5390

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bzrlib/benchmarks/bench_xml.py
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# Copyright (C) 2006 Canonical Ltd
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#
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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
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# GNU 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Tests for bzr xml serialization performance."""
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from bzrlib import (
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    cache_utf8,
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    xml5,
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    )
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from bzrlib.benchmarks import Benchmark
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class BenchXMLSerializer(Benchmark):
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    """Benchmarks for serializing to/from XML."""
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    def test_write_to_string_kernel_like_inventory(self):
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        # On jam's machine, ElementTree serializer took: 2161ms/13487ms
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        #                      with Robert's serializer:  631ms/10770ms
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        #                      with Entity escaper:       487ms/11636ms
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        #           caching Entity escaper, empty cache:  448ms/ 9489ms
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        #           caching Entity escaper, full cache:   375ms/ 9489ms
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        #                      passing around function:   406ms/ 8942ms
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        #              cached, passing around function:   328ms/11248ms
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        #                      removing extra function:   354ms/ 8942ms
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        #              cached, removing extra function:   275ms/11248ms
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        #                          no cache, real utf8:   363ms/11697ms
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        #                            cached, real utf8:   272ms/12827ms
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        # Really all we want is a real inventory
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        inv = self.make_kernel_like_inventory()
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        xml5._clear_cache()
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        # We want a real tree with lots of file ids and sha strings, etc.
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        self.time(xml5.serializer_v5.write_inventory_to_string, inv)
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    def test_write_kernel_like_inventory(self):
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        # Really all we want is a real inventory
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        inv = self.make_kernel_like_inventory()
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        xml5._clear_cache()
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        f = open('kernel-like-inventory', 'wb')
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        try:
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            # We want a real tree with lots of file ids and sha strings, etc.
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            self.time(xml5.serializer_v5.write_inventory, inv, f)
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        finally:
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            f.close()
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    def test_write_to_string_cached_kernel_like_inventory(self):
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        inv = self.make_kernel_like_inventory()
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        xml5._clear_cache()
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        # We want a real tree with lots of file ids and sha strings, etc.
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        xml5.serializer_v5.write_inventory_to_string(inv)
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        self.time(xml5.serializer_v5.write_inventory_to_string, inv)
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    def test_read_from_string_kernel_like_inventory(self):
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        inv = self.make_kernel_like_inventory()
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        as_str = xml5.serializer_v5.write_inventory_to_string(inv)
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        cache_utf8.clear_encoding_cache()
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        read_inv = self.time(xml5.serializer_v5.read_inventory_from_string,
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                             as_str)
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        # TODO: make sure the final inventory is equal as a sanity check
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    def test_read_from_string_cached_kernel_like_inventory(self):
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        cache_utf8.clear_encoding_cache()
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        inv = self.make_kernel_like_inventory()
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        as_str = xml5.serializer_v5.write_inventory_to_string(inv)
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        xml5.serializer_v5.read_inventory_from_string(as_str)
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        read_inv = self.time(xml5.serializer_v5.read_inventory_from_string,
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                             as_str)
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        # TODO: make sure the final inventory is equal as a sanity check