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Date:      Fri, 04 Aug 2023 14:55:58 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 272924] cxgbei drops connections during write, with 16+ sessions
Message-ID:  <bug-272924-7501-WK0fgP7G9Q@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-272924-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-272924-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D272924

Navdeep Parhar <np@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |np@FreeBSD.org

--- Comment #1 from Navdeep Parhar <np@FreeBSD.org> ---
By default the driver allocates just 2 TOE txq/rxq (these are the queues us=
ed
by all the offload drivers, including cxgbei).  The first thing to try woul=
d be
to increase these to 4 or 8, depending on the number of cores in the system=
.=20
Try this in loader.conf:

hw.cxgbe.nofldtxq=3D"-8"
hw.cxgbe.nofldrxq=3D"-8"

Keep an eye on "netstat -dI <ifnet> -w1" when the system is under load.  It=
 may
be that there are packet drops leading to retransmits and loss of performan=
ce.

--=20
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