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pyfec: delete m-k of the tempfiles at random in the benchmark of the to/from files

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Zooko O'Whielacronx 2007-01-26 20:22:13 -07:00
parent 1f1b2a03b7
commit 559411f96d
1 changed files with 8 additions and 2 deletions
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10
pyfec/fec/test/bench_pyfec.py
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@ -27,6 +27,7 @@ import array
def bench_encode_to_files_shuffle_decode_from_files(): def bench_encode_to_files_shuffle_decode_from_files():
FILESIZE=1000000 FILESIZE=1000000
CHUNKSIZE=4096 CHUNKSIZE=4096
PREFIX="testshare"
K=25 K=25
M=100 M=100
import os, time import os, time
@ -41,13 +42,18 @@ def bench_encode_to_files_shuffle_decode_from_files():
outfile = None outfile = None
infile = open("tmpranddata", "rb") infile = open("tmpranddata", "rb")
st = time.time() st = time.time()
fec.filefec.encode_to_files(infile, "testshare", K, M) fec.filefec.encode_to_files(infile, PREFIX, K, M)
so = time.time() so = time.time()
print "Encoded %s byte file into %d share files in %0.2f seconds, or %0.2f million bytes per second" % (FILESIZE, M, so-st, FILESIZE/((so-st)*1000000),) print "Encoded %s byte file into %d share files in %0.2f seconds, or %0.2f million bytes per second" % (FILESIZE, M, so-st, FILESIZE/((so-st)*1000000),)
enctime = so-st enctime = so-st
# Now delete m-k of the tempfiles at random.
tempfs = [ f for f in os.listdir(".") if f.startwith(PREFIX) ]
tempfs.shuffle()
for victimtempf in tempfs[:M-K]:
os.remove(victimtempf)
recoveredfile = open("tmpranddata-recovered", "wb") recoveredfile = open("tmpranddata-recovered", "wb")
st = time.time() st = time.time()
fec.filefec.decode_from_files(recoveredfile, "testshare", K, M) fec.filefec.decode_from_files(recoveredfile, PREFIX, K, M)
so = time.time() so = time.time()
print "Encoded %s byte file from %d share files in %0.2f seconds, or %0.2f million bytes per second" % (FILESIZE, K, so-st, FILESIZE/((so-st)*1000000),) print "Encoded %s byte file from %d share files in %0.2f seconds, or %0.2f million bytes per second" % (FILESIZE, K, so-st, FILESIZE/((so-st)*1000000),)
return enctime + (so-st) return enctime + (so-st)