On Sat, 2013-01-05 at 15:40 -0800, vigna wrote:
> It seems like we are talking about different things. The thousands of open
> connections move beween *hundreds of thousands* of servers. You do not keep
> connections open—and anyway people often sets Apache's httpd timeout for
> reusing connections below a reasonable politeness threshold (e.g., 5s). We
> close connections immediately and move to a new server.
> 
> 

I am not sure. You said previously that you wanted to keep ten thousands
of concurrently open connections for the sake of 'politeness'. To me
that pretty much implies that the I/O reactor has to select through tens
of thousand connections, most of which are not utilized. This certainly
carries a significant cost in terms of performance. (Unless I am missing
something).

Oleg

PS: I'll be off-line shortly and will pick up this thread tomorrow
eventing. 


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