AW: Still much more than 350 sockets needed!
Andrew Haley
aph at redhat.com
Thu Apr 27 09:42:39 UTC 2006
Wes Shull writes:
> On 4/26/06, Andrew Haley <aph at redhat.com> wrote:
> > #include <netdb.h>
>
> [snip]
>
> I don't think Andrew's code is showing the real problem here, because
> it's not actually trying to send anything over the connections after
> they've been opened, to make sure they're still alive.
>
> At first I thought Hendrik was on crack, but I'm able to reproduce
> something similar on my FC5 system. It's not related to the open file
> ulimit.
>
> I hacked up the Tcl code at the bottom to open a bunch of sockets,
> connect to itself, and pass data back and forth; run it and see what
> you get. On my 2.6.16-1.2080_FC5 system, all but 19 of the
> connections die after the client side sends some initial data. I'm
> thinking that some connection tracker (i.e. iptables/netfilter) is
> losing track of them and so kicking back a reset.
>
It works for me, bouncing data back and forth. What does it do on
your box? What is the output?
Andrew.
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