socket leak on alpha.

Barrett G. Lyon (blyon@netpr.com)
Wed, 14 Apr 1999 23:33:07 -0500

I seem to be having a socket leak in 2.2.x, the symptoms are that connect()
just stops working returning EAGAIN.

Another way to see the symptoms are:

hostname:/$> telnet localhost
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Resource temporarily unavailable

Quickly after booting I see tcp_bind_bucket rise.
cat /proc/slabinfo | grep tcp_bind_bucket

But the number of connections etc.. do not reflect the same nubmers that I
see in the /proc/slabinfo.

I was forced to up the ip port range so that the 'pool' is large and my box
can stay up a bit longer.

echo "1024 60000" >/proc/sys/net/ipv4/ip_local_port_range

And quickly after that I started to graph the tcp_bind_bucket:

http://www.doxx.net/load/arsenic.slab..gif

The graph is updated every two minutes, and the machine is about to die,
but I think the graph shows the leak pretty well.

Any ideas?

-Barrett

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