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setup: don't use BaseException (introduced in Python 2.5); instead Exception (for...
[tahoe-lafs/zfec.git] / zfec / stridetune-bench.py
1 #!/usr/bin/env python
2
3 import bisect, random, os, re
4
5 from pyutil import fileutil
6
7 assert not os.path.exists("benchresults")
8
9 os.mkdir("benchresults")
10
11 MIN=512
12 MAX=1024
13
14 results = {}
15
16 R=re.compile("ave rate: ([1-9][0-9]*)")
17
18 def measure(stride):
19     fileutil.rm_dir("build")
20     fileutil.rm_dir("instdir")
21     fileutil.remove_if_possible(os.path.join("zfec", "_fec.so"))
22     fileutil.make_dirs("instdir")
23     fname = os.path.join("benchresults", "comp_0-stride_%d"%stride)
24     os.system("PYTHONPATH=instdir ./setup.py develop --install-dir=instdir --stride=%d >/dev/null" % stride)
25     os.system("PYTHONPATH=instdir python -OO ./bench/bench_zfec.py >> %s" % fname)
26     inf = open(fname, "rU")
27     for l in inf:
28         m = R.search(l)
29         if m:
30             result = int(m.group(1))
31             if results.has_key(stride):
32                 print "stride: %d, results: %d (dup %d)" % (stride, result, results[stride])
33             else:
34                 print "stride: %d, results: %d" % (stride, result)
35             results[stride] = result
36             break
37
38 measure(MIN)
39 measure(MAX)
40
41 while True:
42     stride = random.randrange(MIN, MAX+1)
43     measure(stride)