Thread (6 messages) 6 messages, 4 authors, 2004-08-28

RE: [PATCH] abysmal e1000 performance (DITR)

From: Thayne Harbaugh <hidden>
Date: 2004-08-26 20:04:04

On Thu, 2004-08-26 at 13:55 -0400, jamal wrote:
Ganesh,

Can you please make this feature off by default and perhaps
accesible via ethtool for peopel who want to turn it on.
I just wasted a few hours and was bitten by this performance-wise.
Please consider disabling it.
This is a *horrible* problem.  Even though it's fixable by passing a
module parameter, the default bites those that *know* about it.  We have
had customers bitten by this and customers that have insisted in
swapping all the NICs in a cluster to Broadcom TG3 NICs.

It's a black eye for Intel and a loss of business - that's the opinion
of our customers.
cheers,
jamal

On Fri, 2004-06-04 at 11:44, Venkatesan, Ganesh wrote:
quoted
Thayne:

We are studying the patch and will get back to you once we have a plan
to integrate it into the driver.

Thanks,
ganesh 
 
-------------------------------------------------
Ganesh Venkatesan
Network/Storage Division, Hillsboro, OR

-----Original Message-----
From: Thayne Harbaugh [mailto:tharbaugh@lnxi.com] 
Sent: Friday, June 04, 2004 7:20 AM
To: netdev@oss.sgi.com
Cc: Venkatesan, Ganesh; Feldman, Scott; Brandeburg, Jesse
Subject: Re: [PATCH] abysmal e1000 performance (DITR)

I have documented a serious performance problem with DITR in the e1000
driver.  I have sent a patch to the netdev list as well as CC'ed various
people at Intel.  There has been very little response.  I am wondering
who has reviewed the DITR performance problem and what the plans are for
fixing it.
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