[tahoe-dev] [allmydata.org "zfec"] #4: use SSE2 to speed up multiplication

allmydata.org zfec trac at allmydata.org
Mon May 4 17:42:28 PDT 2009


#4: use SSE2 to speed up multiplication
-------------------------+--------------------------------------------------
 Reporter:  zooko        |           Owner:  somebody
     Type:  enhancement  |          Status:  new     
 Priority:  major        |       Milestone:          
Component:  component1   |         Version:          
 Keywords:               |   Launchpad_bug:          
-------------------------+--------------------------------------------------

Comment(by zooko):

 Oh, I see that Jack's mail also says that zfec takes 3 times as long to
 decode something if it is being invoked from Python as if it is being
 invoked from C!  That's another mystery.  It isn't actually a high
 priority, because the CPU usage due to zfec is much smaller than the CPU
 usage due to other things such as the Python interpreter, in all
 measurements that I've seen, but still, it would be great for someone to
 investigate.

-- 
Ticket URL: <http://allmydata.org/trac/zfec/ticket/4#comment:1>
allmydata.org "zfec" <http://allmydata.org/>
allmydata.org "zfec"


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