On Tue, 14 Jun 2005, PSI, Mike Smith wrote:
Idiot test requested by client - Same as above but see how fast 10,000
can be sent (will never come close to happening in the real world).
Problem: Because among other things I am using let's say minimal and
ancient computer power, I hit a DOS state after about 3700 connects. I
know (think?) I am running out of mbufs because of the 2MSL delay on the
close.
Is there any way to close a TCP connection and have all resources
immediately freed? I KNOW this is really violating all the data
integrity features of TCP, but this is an idiotic test remember. And in
this case I am not concerned about data integrety. I have noticed that
LINUX has a TCP_LINGER2 option that can at least minimize the closing
delay (freeing resources) but I haven't found anything comparable in
FreeBSD.
Are the TIME_WAIT sockets building up on the client or the server?
5.x has some features so that it does not allow too many TIME_WAIT sockets
to build up beyond a certain threshold, but if you're using 4.x we can
still tweak some sysctl values to achieve the effect you want.
Mike "Silby" Silbersack
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