netdev - Re: tg3 bad performance, lots of hardware interrupts

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Message-ID: <1206726560.6866.5.camel@dell>
Date:	Fri, 28 Mar 2008 09:49:20 -0800
From:	"Michael Chan" <mchan@...adcom.com>
To:	"Harald Hannelius" <harald@....fi>
cc:	"David Miller" <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	netdev <netdev@...r.kernel.org>
Subject: Re: tg3 bad performance, lots of hardware interrupts

On Fri, 2008-03-28 at 15:04 +0200, Harald Hannelius wrote:
> Phew, I thought that running ethtool -t was like doing stop-A-sync on
> a 
> Sun. It took almost half an hour to run that ethtool -t command;

Something is very wrong.  ethtool -t should only take a few seconds to
complete.  You can try ethtool -t eth0 online to reduce the number of
tests to see if it makes a difference.

How many of these NICs do you have?  If you have more than one, do they
all behave the same way?  Have they ever worked well before?

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