Several Different kernel related (?) problems

[Tim Waugh]

On Sat, Aug 14, 2004 at 10:47:58AM -0400, Alan Cox wrote:

> On Sat, Aug 14, 2004 at 07:23:23PM +1000, Philip Anderson wrote:
> > I also had to boot our server back to the previous kernel, as the latest 
> > FC2 kernel (2.6.7-1.494.2.2) made samba unusable.  Connections could be 
> > made, but throughput was so low and unreliable that many applications 
> > were timing out, causing database corruption in our Library software.  
> > I'm currently using 2.6.6-1.435.2.3 without any problems.  The problems 
> > were with a variety of Win XP, 98 clients.
> 
> Sounds like you've got a buggy firewall/proxy box between you and the clients
> that also cannot handle window scaling. If you turn window scaling off as in
> the previous discussion does it help ?

It sounds more like the known bug in 2.6.7-1.494.2.2 that causes
tcp_moderate_rcvbuf to pull in the TCP window to ridiculously small
sizes, even with window scaling disabled.

Try 'echo 0 > /proc/sys/net/ipv4/tcp_moderate_rcvbuf', or else try the
current testing kernel update for FC2.

Tim.
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