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# Copyright (C) 2006 Canonical Ltd
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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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# 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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# 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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"""Tests for bzr xml serialization performance."""
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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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# 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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f = open('kernel-like-inventory', 'wb')
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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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def test_write_to_string_cached_kernel_like_inventory(self):
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inv = self.make_kernel_like_inventory()
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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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# 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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# TODO: make sure the final inventory is equal as a sanity check