Date: Wed, 09 Feb 2011 12:02:05 +0400 From: rihad <rihad@mail.ru> To: Nikolay Denev <ndenev@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: Slow Intel 10GbE CX4 adapter behaviour Message-ID: <4D5249FD.4040103@mail.ru> In-Reply-To: <A6E9AE49-56FB-4217-BDA8-0FD74C901115@gmail.com> References: <4D522657.10500@mail.ru> <A6E9AE49-56FB-4217-BDA8-0FD74C901115@gmail.com>
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On 02/09/2011 10:43 AM, Nikolay Denev wrote:
> I don't know if it's the same issue, but I had severe performance issues
> with ixgbe cards until I disable LRO (ifconfig ix0 -lro). That was on 7.2 too.
>
So did I, with LR-based cards. But CX4 cards don't mention LRO in their
ifconfig enabled flags. Besides, ixgbe.c doesn't enable it by default:
/* Don't enable LRO by default */
ifp->if_capabilities |= IFCAP_LRO;
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