Re: [Emc-developers] Stretch and its preempt-rt kernel

2019-11-01 Thread Gene Heskett 
On Friday 01 November 2019 19:57:07 Peter C. Wallace wrote:

> On Fri, 1 Nov 2019, Gene Heskett wrote:
> > Date: Fri, 1 Nov 2019 19:32:38 -0400
> > From: Gene Heskett 
> > Reply-To: EMC developers 
> > To: EMC Developers 
> > Subject: [Emc-developers] Stretch and its preempt-rt kernel
> >
> > I'm loggng that eth0 has a possible GRO (whatever that is)
> > infection, and that tcp performance might be degraded.
>
> Probably OK to just just turn off GRO in the driver via ethtool
>
Which I had to install.

You will have to show me how, as sudo ethtool -h doesn't mention gro.

>From the man page, this does not give an error return, is it correct?

gene@coyote:~$ sudo ethtool -K eth0 gro off
gene@coyote:~$

If not correct, how do I query it.

Everything else is running wheezy yet, or the rpi4 is running raspbian 
10.1.  So I've 3 machines still on wheezy.

> > from dmesg:
> >
> > TCP: eth0: Driver has suspect GRO implementation, TCP performance
> > may be compromised.
> >
> > Doing a net searh it seems to be a feature of the
> > Linux coyote 4.9.0-11-rt-amd64
> > kernel being used.
> >
> > Scutllebut on the net says its not a show stopper, and can be fixed
> > with most any later build. Could this be updated?
> >
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> > soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > If we desire respect for the law, we must first make the law
> > respectable. - Louis D. Brandeis
> > Genes Web page <http://geneslinuxbox.net:6309/gene>
> >
> >
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> > Emc-developers@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-developers
>
> Peter Wallace
> Mesa Electronics
>
> (\__/)
> (='.'=) This is Bunny. Copy and paste bunny into your
> (")_(") signature to help him gain world domination.
>
>
>
> ___
> Emc-developers mailing list
> Emc-developers@lists.sourceforge.net
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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Re: [Emc-developers] Stretch and its preempt-rt kernel

2019-11-01 Thread Peter C. Wallace 

On Fri, 1 Nov 2019, Gene Heskett wrote:


Date: Fri, 1 Nov 2019 19:32:38 -0400
From: Gene Heskett 
Reply-To: EMC developers 
To: EMC Developers 
Subject: [Emc-developers] Stretch and its preempt-rt kernel

I'm loggng that eth0 has a possible GRO (whatever that is) infection, and
that tcp performance might be degraded.



Probably OK to just just turn off GRO in the driver via ethtool




from dmesg:

TCP: eth0: Driver has suspect GRO implementation, TCP performance may be
compromised.

Doing a net searh it seems to be a feature of the
Linux coyote 4.9.0-11-rt-amd64
kernel being used.

Scutllebut on the net says its not a show stopper, and can be fixed with
most any later build. Could this be updated?

Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.



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[Emc-developers] Stretch and its preempt-rt kernel

2019-11-01 Thread Gene Heskett 
I'm loggng that eth0 has a possible GRO (whatever that is) infection, and 
that tcp performance might be degraded.

from dmesg:

TCP: eth0: Driver has suspect GRO implementation, TCP performance may be 
compromised.

Doing a net searh it seems to be a feature of the 
Linux coyote 4.9.0-11-rt-amd64
kernel being used.

Scutllebut on the net says its not a show stopper, and can be fixed with 
most any later build. Could this be updated?

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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