New submission from Jesús Cea Avión <[EMAIL PROTECTED]>:
threading.RLock acquire/release is very slow. A order of magnitude
higher than no reentrant threading.Lock:
"""
def RLockSpeed() :
import time, threading
t=time.time()
result={}
for i in xrange(1000000) :
pass
result["empty loop"]=time.time()-t
l=threading.Lock()
t=time.time()
for i in xrange(1000000) :
l.acquire()
l.release()
result["Lock"]=time.time()-t
l=threading.RLock()
t=time.time()
for i in xrange(1000000) :
l.acquire()
l.release()
result["RLock"]=time.time()-t
return result
if __name__=="__main__" :
print RLockSpeed()
"""
Result:
{'empty loop': 0.074212074279785156, 'RLock': 10.144084215164185,
'Lock': 1.2489800453186035}
----------
messages: 67497
nosy: jcea
severity: normal
status: open
title: RLock's are SLOW
type: performance
versions: Python 2.6, Python 3.0
_______________________________________
Python tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue3001>
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