Re: Single-threading servers and select()

[Jeff Koftinoff <jeffk@...>]

On 22-Jan-05, at 4:52 PM, duck wrote:

> Recently, it was suggested that select()-driven TCP servers could never
> scale to many 1000s of connections because of the linear cost of 
> searching
> the select array each time a non-zero number of connections had some 
> data
> handy.
>
> In the real world, is this really an intractable problem? With very 
> many
> connections, surely each select() will identify many connections with 
> data
> available, thus amortising the cost of scanning the select array over 
> many
> connections?

Read http://www.kegel.com/c10k.html

The problem is that select() requires the app to do a lot of work to 
set up all the FD_SETs and scan them.

Jeff

--
Jeff Koftinoff <jeffk@jdkoftinoff.com>
www.jdkoftinoff.com

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