Re: tcp_mem problem

[Andi Kleen]

On Sun, May 20, 2001 at 07:33:15PM +0200, David Osojnik wrote:
> the system with problem is using kernel 2.4.2 on an P200 with 64mb ram. It 
> has about 20 users that use the box... (ftp, telnet, lynx, bitchx,...).
> 
> the problem is when the parameter tcp_mem HIGH gets exeded after about a day 
> of use! Then the box is going from the net and its not awailable. I tried to 
> tune the system with adding more in proc tcp_mem but the problem is still 
> there the box only lasts for bout 2h longer.
> 
> and i get this in messages
> 
> kernel: TCP: too many of orphaned sockets
> 
> It looks like my system is not droping closed sockets?

You can check by using netstat -tan 
Normally the message is harmless; when it happens the closed sockets are
RST instead of being closed properly.

-Andi