/brz/remove-bazaar

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Viewing changes to bzrlib/benchmarks/bench_pack.py

  • Committer: John Arbash Meinel
  • Date: 2010-08-13 19:08:57 UTC
  • mto: (5050.17.7 2.2)
  • mto: This revision was merged to the branch mainline in revision 5379.
  • Revision ID: john@arbash-meinel.com-20100813190857-mvzwnimrxvm0zimp
Lots of documentation updates.

We had a lot of http links pointing to the old domain. They should
all now be properly updated to the new domain. (only bazaar-vcs.org
entry left is for pqm, which seems to still reside at the old url.)

Also removed one 'TODO' doc entry about switching to binary xdelta, since
we basically did just that with groupcompress.

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# Copyright (C) 2007 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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"""Benchmarks for pack performance"""
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import os
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from bzrlib import (
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    pack,
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    )
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from bzrlib.benchmarks import Benchmark
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class BenchPack(Benchmark):
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    """Benchmark pack performance."""
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    def test_insert_one_gig_1k_chunks_no_names_disk(self):
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        # test real disk writing of many small chunks.
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        # useful for testing whether buffer sizes are right
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        transport = self.get_transport()
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        stream = transport.open_write_stream('pack.pack')
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        writer = pack.ContainerWriter(stream.write)
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        self.write_1_gig(writer)
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        stream.close()
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    def test_insert_one_gig_1k_chunks_no_names_null(self):
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        # write to dev/null so we test the pack processing.
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        transport = self.get_transport()
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        dev_null = open('/dev/null', 'wb')
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        writer = pack.ContainerWriter(dev_null.write)
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        self.write_1_gig(writer)
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        dev_null.close()
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    def write_1_gig(self, writer):
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        one_k = "A" * 1024
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        writer.begin()
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        def write_1g():
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            for hunk in xrange(1024 * 1024):
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                writer.add_bytes_record(one_k, [])
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        self.time(write_1g)
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        writer.end()