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From: Stephen Hemminger <shemminger@vyatta.com>
To: "Niccolò Belli" <darkbasic@linuxsystems.it>
Cc: netdev@vger.kernel.org
Subject: Re: sky2 still badly broken
Date: Thu, 3 May 2012 14:25:17 -0700	[thread overview]
Message-ID: <20120503142517.310ea84c@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <4FA2DE52.306@linuxsystems.it>

On Thu, 03 May 2012 21:36:50 +0200
Niccolò Belli <darkbasic@linuxsystems.it> wrote:

> Il 03/05/2012 17:23, Stephen Hemminger ha scritto:
> > The receiver on some versions of the chip can't keep up with full speed
> > of 1G bit/sec. The receive  FIFO has hardware issues, and since I don't
> > work for Marvell, working around the problem is guesswork.
> 
> Just one question: if that is true why don't I have any problem with a 
> point to point gigabit link? I did transfer 3GB from ram to ram (ramfs) 
> at 100+MB/s without any issue in a point to point setup, as soon as I 
> attach it to the switch I have problems (very low transfer rate and tons 
> of rx errors).

I don't know but the PHY interaction is different with auto-crossover.

      reply	other threads:[~2012-05-03 21:25 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-27 20:15 sky2 still badly broken Niccolò Belli
2012-04-27 20:41 ` [RFT] sky2: fix status length check on older chips Stephen Hemminger
2012-04-27 20:48   ` David Miller
2012-04-27 20:55   ` Stephen Hemminger
2012-04-27 23:05     ` Niccolò Belli
2012-04-28  2:46       ` Stephen Hemminger
2012-04-28 10:25         ` Niccolò Belli
2012-04-30 16:19           ` Stephen Hemminger
2012-04-30 18:23             ` Niccolò Belli
2012-04-28  3:03       ` [PATCH] sky2: fix receive length error in mixed non-VLAN/VLAN traffic Stephen Hemminger
2012-04-28  3:05         ` Stephen Hemminger
2012-09-17 14:20     ` [RFT] sky2: fix status length check on older chips Ivan Minev
2012-04-30 19:25 ` sky2 still badly broken Stephen Hemminger
2012-04-30 23:50   ` Niccolò Belli
2012-05-02 15:12   ` Niccolò Belli
2012-05-02 18:56     ` Stephen Hemminger
2012-05-03  9:40       ` Niccolò Belli
2012-05-03 15:23         ` Stephen Hemminger
2012-05-03 18:06           ` Niccolò Belli
2012-05-03 18:15             ` Stephen Hemminger
2012-05-03 19:26               ` Niccolò Belli
2012-05-03 19:36           ` Niccolò Belli
2012-05-03 21:25             ` Stephen Hemminger [this message]

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