Groups > comp.os.linux.networking > #2950

Re: TCP connections freezing unexplicably

From	Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups	comp.os.linux.networking
Subject	Re: TCP connections freezing unexplicably
Date	2014-05-13 09:26 -0400
Organization	A noiseless patient Spider
Message-ID	<jwvoaz1yfte.fsf-monnier+comp.os.linux.networking@gnu.org> (permalink)
References	<jwvy4y73fb1.fsf-monnier+comp.os.linux.networking@gnu.org> <slrnln185s.2t7.grahn+nntp@frailea.sa.invalid> <wwvd2fidc35.fsf@l1AntVDjLrnP7Td3DQJ8ynzIq3lJMueXf87AxnpFoA.invalid>

Show all headers | View raw

> My wild stab in the dark is that the problem is MTU-related.

The netstat output didn't help me very much, and before I got to the
tcpdump approach, I took a look at the MTU aspect, which made me think
of comparing the setup (including ifconfig and ethtool's output) to the
one from another machine which used to work in the exact same situation.

It turns out that it's probably a bug in the ethernet card's driver.
At least after playing around with "ethtool -s eth0 speed 100 duplex
full" and "ethtool -s eth0 speed 1000 duplex full", the freezes are
now gone.

Thanks for putting me on the right path,


        Stefan

Back to comp.os.linux.networking | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

TCP connections freezing unexplicably Stefan Monnier <monnier@iro.umontreal.ca> - 2014-05-11 22:52 -0400
  Re: TCP connections freezing unexplicably Jorgen Grahn <grahn+nntp@snipabacken.se> - 2014-05-12 10:21 +0000
    Re: TCP connections freezing unexplicably Richard Kettlewell <rjk@greenend.org.uk> - 2014-05-12 20:35 +0100
      Re: TCP connections freezing unexplicably Stefan Monnier <monnier@iro.umontreal.ca> - 2014-05-13 09:26 -0400

csiph-web