Re: e1000 udp errors and optimizations

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We are actually seeing errors in 'netstat -su'
and not in the ethernet layer.

I also raised descriptor size to 4096 to no avail.

And we are working on PCI slots because working in PCI-X mode gave us a lot of errors. I admit we haven't tried PCI-X with 4.4.12 or 4.3.15 (only 4.3.2).

Thanks,
Yuval









From: Manish Lachwani <m_lachwani@yahoo.com>
To: yuval yeret <yuval_yeret@hotmail.com>, linux-net@vger.kernel.org
Subject: Re: Date: Wed, 18 Dec 2002 08:11:49 -0800 (PST)

Are these Rx FIFO or Rx Missed errors? These errors
occur due to insufficient PCI bandwidth or lower size
of the Rx descriptors.

Note that in case of 82546, both the NICs shared the
same PCI bus. Whats the PCI speed/width and how many
devices are using the same bus?

Did u try using a PCIX motherboard.

Thanks
Manish


--- yuval yeret <yuval_yeret@hotmail.com> wrote:
> (please CC: me on responses as I do not subscribe to
> this list)
>
> I'm using e1000 NICs using the 4.3.15 driver (I'm
> using the 82546 chipset
> Pro/1000 MT/MF adapters) on a 2.4.18 kernel
>
> I'm seeing a lot of receive errors when working
> under heavy load (specSFS to
> be exact) with either Jumbo frames or normal frames.
>
> We've been trying to tweak the IntDelay parameters
> and Descriptors to
> resolve this, to no avail.
>
> When working under 4.1.7 driver with older NICs
> there are no errors, but
> performance is much lower as well.
>
> Can someone point me to recommended configurations
> for various workloads, or
> other means of handling this problem ?
>
> Thanks,
>
> Yuval Yeret
> Exanet
> yuval@exanet.com
> http://www.exanet.com
> Tel.  972-9-9717782
> Fax. 972-9-9717778
>
>
>
>
>
>
>
>
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