Hi!
On Feb 16, 2009, at 10:12 AM, MARK CALLAGHAN wrote:
I am not sure what a scoreboard is. Our implementation updates global
The term "scoreboard" comes from Apache. Basically the idea is a
global array that is lockless. Each session has its own N line in the
array that it updates. All reads across the structure are done without
locks. So any sort of "reads" from it to create accumulated data are
dirty. If you know max_connections the array is easy to setup, though
there is a cost for finding a slot for the incoming session.
Cheers,
-Brian
--
_______________________________________________________
Brian "Krow" Aker, brian at tangent.org
Seattle, Washington
http://krow.net/ <-- Me
http://tangent.org/ <-- Software
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You can't grep a dead tree.
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