On Nov 11, 2009, at 9:35 PM, Richard Tew wrote:
They have an nice example where they chain 100000 microthreads each
wrapping the same function that increases the value of a passed
argument by one, with channels inbetween. Pumping a value through the
chain takes 1.5 seconds. I can't imagine that Stackless will be
anything close to that, given the difference between scripting and
compiled code.
Did I mess up in my benchmark? I got about 0.07 seconds to go through
100,000 microthreads.
output:
% spython 100000_tasklets.py
100000
100001
100002
100003
100004
100005
100006
100007
100008
100009
startup time: 0.345
10 elements in: 0.714
Benchmark:
import stackless
def source(ch):
ch.send_sequence(range(10))
ch.close()
def chain(up, down):
for item in up:
down.send(item+1)
down.close()
def sink(up):
for item in up:
print item
def startup():
down = stackless.channel()
stackless.tasklet(source)(down)
for i in range(100000):
up = down
down = stackless.channel()
stackless.tasklet(chain)(up, down)
stackless.tasklet(sink)(down)
import time
t1 = time.time()
startup()
t2 = time.time()
stackless.run()
t3 = time.time()
print "startup time:", "%.3f" % (t2-t1)
print "10 elements in:", "%.3f" % (t3-t2)
Andrew
[email protected]
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