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SubjectRe: 100Mbps TCP stalls in 2.1.115
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Andi Kleen <ak@muc.de> writes:

> On Sun, Aug 09, 1998 at 02:36:49AM +0200, Zlatko Calusic wrote:
> > Andi Kleen <ak@muc.de> writes:
> >
> > > Zlatko Calusic <Zlatko.Calusic@CARNet.hr> writes:
> > > >
> > > > E. g. FTP between two 100mbit hosts, transfer rate is ~50kb/sec, but
> > > > many times it recovers after few (or few tens of) seconds.
> > > >
> > > > Sometimes it works, sometimes not. Tcpdump logs available on request.
> > > >
> > > > Any clue?
> > >
> > > What does /proc/net/netstat say after such a stall?
> >
> > {atlas} [~]% cat /proc/net/netstat
> > TcpExt: SyncookiesSent SyncookiesRecv SyncookiesFailedEmbryonicRsts
> > TcpExt: 0 0 0 0
>
> You need a kernel >= 2.1.114 for useful output, sorry.

That was 2.1.115! :)

> If ping is slow too it is probably a network driver problem,
> not a TCP problem.
>

Hm, could be.

I'm applying a small patch to de4x5 driver to get rid of
annoying multiple messages during boot.

I'll investigate further...

Later,
--
Posted by Zlatko Calusic E-mail: <Zlatko.Calusic@CARNet.hr>
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