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bzrlib/benchmarks/bench_bench.py
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"""Tests for bzr benchmark utilities performance."""
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from bzrlib import (
 
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    osutils,
 
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    )
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from bzrlib.benchmarks import Benchmark
 
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from bzrlib.benchmarks.tree_creator.kernel_like import (
 
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    KernelLikeTreeCreator,
 
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    KernelLikeAddedTreeCreator,
 
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    KernelLikeCommittedTreeCreator,
 
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    )
 
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from bzrlib.tests import TestSkipped
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class MakeKernelLikeTreeBenchmark(Benchmark):
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        # with AtomicFile tuning:                    2888ms/ 2926ms
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        # switching to transport.append:             1468ms/ 2849ms
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        self.time(self.make_kernel_like_tree)
 
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    def test_02_make_kernel_like_tree(self):
 
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        """Hardlinking a kernel-like working tree should be ~1s"""
 
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        # make sure kernel_like_tree is cached
 
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        creator = KernelLikeTreeCreator(self, link_working=True)
 
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        if not creator.is_caching_enabled():
 
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            raise TestSkipped('caching is disabled')
 
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        creator.ensure_cached()
 
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        self.time(creator.create, root='bar')
 
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    def test_03_make_kernel_like_added_tree(self):
 
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        """Time the first creation of a kernel like added tree"""
 
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        creator = KernelLikeAddedTreeCreator(self)
 
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        creator.disable_cache()
 
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        self.time(creator.create, root='foo')
 
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    def test_04_make_kernel_like_added_tree(self):
 
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        """Time the second creation of a kernel like added tree 
 
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        (this should be a clone)
 
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        """
 
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        # make sure kernel_like_added_tree is cached
 
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        creator = KernelLikeAddedTreeCreator(self, link_working=True)
 
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        if not creator.is_caching_enabled():
 
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            # Caching is disabled, this test is meaningless
 
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            raise TestSkipped('caching is disabled')
 
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        creator.ensure_cached()
 
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        self.time(creator.create, root='bar')
 
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    def test_05_make_kernel_like_committed_tree(self):
 
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        """Time the first creation of a committed kernel like tree"""
 
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        creator = KernelLikeCommittedTreeCreator(self)
 
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        creator.disable_cache()
 
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        self.time(creator.create, root='foo')
 
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    def test_06_make_kernel_like_committed_tree(self):
 
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        """Time the second creation of a committed kernel like tree 
 
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        (this should be a clone)
 
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        """
 
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        creator = KernelLikeCommittedTreeCreator(self,
 
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                                                 link_working=True,
 
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                                                 link_bzr=False)
 
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        if not creator.is_caching_enabled():
 
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            # Caching is disabled, this test is meaningless
 
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            raise TestSkipped('caching is disabled')
 
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        creator.ensure_cached()
 
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        self.time(creator.create, root='bar')
 
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    def test_07_make_kernel_like_committed_tree_hardlink(self):
 
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        """Time the creation of a committed kernel like tree 
 
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        (this should also hardlink the .bzr/ directory)
 
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        """
 
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        creator = KernelLikeCommittedTreeCreator(self,
 
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                                                 link_working=True,
 
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                                                 link_bzr=True)
 
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        if not creator.is_caching_enabled():
 
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            # Caching is disabled, this test is meaningless
 
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            raise TestSkipped('caching is disabled')
 
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        creator.ensure_cached()
 
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        self.time(creator.create, root='bar')
 
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