[Swift-devel] swift performance optimization on BGP

[Zhao Zhang]

Hi, All

After the optimization last week, I was suffering the 2nd round task 
poor performance, as you could tell
from the "info trails" picture on 
http://www.ci.uchicago.edu/~zzhang/report-sleep-20081016-1509-gqr8tea9/   


with bunch of tests and verification, I found the poor performance comes 
from the info log transfer. Thus I tried
the collective IO for info log transfer, and it solves the problem, I 
get such a beautiful picture:

I am working more to integrate the Collective IO system along with swift 
on BGP.

zhao
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