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Subject: Re: Fix Emulex "oce" driver in CURRENT
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From: Borja Marcos <borjam@sarenet.es>
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To: Stefano Garzarella <stefanogarzarella@gmail.com>
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Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
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 Luigi Rizzo <rizzo@iet.unipi.it>, Xin LI <d@delphij.net>
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On Jul 15, 2014, at 1:36 PM, Stefano Garzarella wrote:

> So, asking for spiritual counsel now. Would you use this driver  in a =
production environment instead of the 747 version downloaded from =
Emulex? I think the latter is giving slightly better performance but, =
anyway, I disable LRO and TSO because I see a horrible impact on NFS =
performance.
>=20
>=20
> I made a diff between the two versions (CURRENT and 747) and I saw =
that the main difference is in the management of buf_ring through drbr =
API.
> In the CURRENT driver they use a new function drbr_peek() instead of =
drbr_dequeue() and I think this is better.
> However, even in the 747 version seems to have the problem of the lack =
of locking.

Well, definitely you saved my cake! So it was still a tickling time =
bomb.

Thank you very much!




Borja.