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https://github.com/tahoe-lafs/tahoe-lafs.git
synced 2024-12-29 01:08:54 +00:00
108 lines
3.5 KiB
Python
108 lines
3.5 KiB
Python
import hotshot.stats, os, random
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from pyutil import benchutil, randutil # http://allmydata.org/trac/pyutil
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from allmydata import client, dirnode, uri
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from allmydata.mutable import filenode as mut_filenode
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from allmydata.immutable import filenode as immut_filenode
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class FakeDownloadCache:
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def get_file(self, key):
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return None
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class FakeClient(client.Client):
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# just enough
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def __init__(self):
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self._node_cache = {}
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self.download_cache = FakeDownloadCache()
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def getServiceNamed(self, name):
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return None
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def get_encoding_parameters(self):
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return {"k": 3, "n": 10}
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def get_writekey(self):
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return os.urandom(16)
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class FakeMutableFileNode(mut_filenode.MutableFileNode):
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def __init__(self, client):
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mut_filenode.MutableFileNode.__init__(self, client)
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self._uri = uri.WriteableSSKFileURI(randutil.insecurerandstr(16), randutil.insecurerandstr(32))
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class FakeDirectoryNode(dirnode.NewDirectoryNode):
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def __init__(self, client):
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dirnode.NewDirectoryNode.__init__(self, client)
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mutfileuri = uri.WriteableSSKFileURI(randutil.insecurerandstr(16), randutil.insecurerandstr(32))
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myuri = uri.NewDirectoryURI(mutfileuri)
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self.init_from_uri(myuri)
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children = [] # tuples of (k, v) (suitable for passing to dict())
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packstr = None
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fakeclient = FakeClient()
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testdirnode = dirnode.NewDirectoryNode(fakeclient)
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testdirnode.init_from_uri(uri.NewDirectoryURI(uri.WriteableSSKFileURI(randutil.insecurerandstr(16), randutil.insecurerandstr(32))))
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def random_unicode(l):
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while True:
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try:
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return os.urandom(l).decode('utf-8')
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except UnicodeDecodeError:
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pass
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def random_fsnode():
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coin = random.randrange(0, 3)
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if coin == 0:
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return immut_filenode.FileNode(uri.CHKFileURI(randutil.insecurerandstr(16), randutil.insecurerandstr(32), random.randrange(1, 5), random.randrange(6, 15), random.randrange(99, 1000000000000)), fakeclient, None)
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elif coin == 1:
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return FakeMutableFileNode(fakeclient)
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else:
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assert coin == 2
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return FakeDirectoryNode(fakeclient)
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def random_metadata():
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d = {}
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d['ctime'] = random.random()
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d['mtime'] = random.random()
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d['tahoe'] = {}
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d['tahoe']['linkcrtime'] = random.random()
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d['tahoe']['linkmotime'] = random.random()
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return d
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def random_child():
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return random_fsnode(), random_metadata()
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def init_for_pack(N):
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for i in xrange(len(children), N):
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children.append((random_unicode(random.randrange(1, 9)), random_child()))
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def init_for_unpack(N):
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global packstr
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init_for_pack(N)
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packstr = pack(N)
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def pack(N):
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return testdirnode._pack_contents(dict(children[:N]))
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def unpack(N):
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return testdirnode._unpack_contents(packstr)
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def unpack_and_repack(N):
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return testdirnode._pack_contents(testdirnode._unpack_contents(packstr))
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def run_benchmarks(profile=False):
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for (func, initfunc) in [(unpack, init_for_unpack), (pack, init_for_pack), (unpack_and_repack, init_for_unpack)]:
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print "benchmarking %s" % (func,)
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benchutil.bench(unpack_and_repack, initfunc=init_for_unpack, TOPXP=12, profile=profile, profresults="bench_dirnode.prof")
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def print_stats():
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s = hotshot.stats.load("bench_dirnode.prof")
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s.strip_dirs().sort_stats("time").print_stats(32)
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def prof_benchmarks():
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# This requires pyutil >= v1.3.34.
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run_benchmarks(profile=True)
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if __name__ == "__main__":
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run_benchmarks()
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# prof_benchmarks()
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# print_stats()
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