svn commit: r295136 - in head: sys/kern sys/netinet sys/sys usr.bin/netstat

Slawa Olhovchenkov slw at zxy.spb.ru
Tue Feb 2 21:10:01 UTC 2016


On Tue, Feb 02, 2016 at 12:35:47PM -0800, Alfred Perlstein wrote:

> > I would second John's comment on the necessity of the change though, 
> > if one already have 32K of *backlogged* connections, it's probably not 
> > very useful to allow more coming in.  It sounds like the application 
> > itself is seriously broken, and unless expanding the field have some 
> > performance benefit, I don't think it should stay.
> 
> Imagine a hugely busy image board like 2ch.net, if there is a single 
> hiccup, it's very possible to start dropping connections.

In reality start dropping connections in any case: nobody will be
infinity wait of accept (user close browser and go away, etc).

Also, if you have more then 4K backloged connections -- you have
problem, you can't process all connections request and in next second
you will be have 8K, after next second -- 12K and etc.


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