From: zooko Date: Fri, 9 Nov 2007 18:14:55 +0000 (+0530) Subject: zfec: add benchmarks for easyfec (untested) X-Git-Url: https://git.rkrishnan.org/components/com_hotproperty/flags/%22news.html/status?a=commitdiff_plain;h=c563717f28e3ece7646cabc35c6aad2fe5620c86;p=tahoe-lafs%2Fzfec.git zfec: add benchmarks for easyfec (untested) darcs-hash:5fbe3fc4ef8a98da3633cccdb940740ccc2efb1e --- diff --git a/zfec/bench/bench_zfec.py b/zfec/bench/bench_zfec.py index 6f37b21..1e85888 100644 --- a/zfec/bench/bench_zfec.py +++ b/zfec/bench/bench_zfec.py @@ -1,4 +1,5 @@ -from zfec import filefec +from zfec import easyfec, Encoder, filefec +from pyutil import mathutil import os @@ -15,6 +16,22 @@ def donothing(results, reslenthing): K=3 M=10 +d = "" +ds = [] +easyfecenc = None +fecenc = None +def _make_new_rand_data(size): + global d, easyfecenc, fecenc + d = os.urandom(size) + del ds[:] + ds.extend([None]*K) + blocksize = mathutil.div_ceil(size, K) + for i in range(K): + ds[i] = d[i*blocksize:(i+1)*blocksize] + ds[-1] = ds[-1] + "\x00" * (len(ds[-2]) - len(ds[-1])) + easyfecenc = easyfec.Encoder(K,M) + fecenc = Encoder(K,M) + import sha hashers = [ sha.new() for i in range(M) ] def hashem(results, reslenthing): @@ -39,11 +56,26 @@ def _encode_file_not_really_and_hash(N): def _encode_file_and_hash(N): filefec.encode_file(open(FNAME, "rb"), hashem, K, M) +def _encode_data_not_really(N): + i = 0 + for c in d: + i += 1 + assert len(d) == N == i + pass + +def _encode_data_easyfec(N): + easyfecenc.encode(d) + +def _encode_data_fec(N): + fecenc.encode(ds) + def bench(): # for f in [_encode_file_stringy_easyfec, _encode_file_stringy, _encode_file, _encode_file_not_really,]: # for f in [_encode_file,]: - for f in [_encode_file_not_really, _encode_file_not_really_and_hash, _encode_file, _encode_file_and_hash,]: + # for f in [_encode_file_not_really, _encode_file_not_really_and_hash, _encode_file, _encode_file_and_hash,]: + for f in [_encode_data_not_really, _encode_data_easyfec, _encode_data_fec,]: print f - benchutil.bench(f, initfunc=_make_new_rand_file, TOPXP=23, MAXREPS=128, MAXTIME=64) + benchutil.bench(f, initfunc=_make_new_rand_data, TOPXP=8, MAXREPS=256, MAXTIME=64) + benchutil.bench(f, initfunc=_make_new_rand_data, TOPXP=16, MAXREPS=256, MAXTIME=64) -# bench() +bench()