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Date:      Mon, 10 Jun 2013 15:41:44 +0200
From:      Julian Stecklina <jsteckli@os.inf.tu-dresden.de>
To:        "freebsd-infiniband@freebsd.org" <freebsd-infiniband@freebsd.org>
Subject:   ib1: timing out; N sends not completed
Message-ID:  <51B5D798.5090008@os.inf.tu-dresden.de>

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Hello,

I have two machines connected back-to-back via Infiniband with Mellanox
Infinihost III adapters. One machine runs Linux (Fedora 19) and the
other 9-STABLE.

I sometimes get:

ib1: timing out; 47 sends not completed
ib1: timing out; 1 sends not completed
ib1: timing out; 56 sends not completed

or similar and TCP connections will be stuck after each timeout for a
while. It is relatively easy to reproduce this behavior with NetPIPE.

Any advice?

Julian


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