Re: network performance over 1GBps links degraded

From: Gary Jennejohn <gljennjohn_at_gmail.com>
Date: Sun, 18 Mar 2018 17:13:45 +0100
On Sun, 18 Mar 2018 12:21:54 +0100
Gary Jennejohn <gljennjohn_at_gmail.com> wrote:

> On Sun, 18 Mar 2018 11:48:32 +0100
> Alex Dupre <ale_at_FreeBSD.org> wrote:
> 
> > Gary Jennejohn wrote:  
> > > I have two computers, both with 1Gbps interfaces plugged into a
> > > 1Gb switch.  One computer is running FreeBSD HEAD and the other
> > > some version of Linux.  Under FreeBSD I have re0 and under Linux
> > > I don't know what the hardware is.
> > > 
> > > I noticed that the transfer speed has dropped to only about
> > > 12MBps.  I'm used to seeing about 27MBps during the ftp
> > > transfers.    
> > 
> > Do you see "re0: watchdog timeout" errors?
> > 
> > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=166724
> >   
> 
> Thanks, but I just copied some 30GB between the FreeBSD and Windows
> 10 computer and didn't see a single error message.
> 
> I tried r330300, but the behavior didn't change.  Maybe I should go even
> further back in time.
> 
> One possibilty is the new BIOS I installed on my Ryzen (FreeBSD) box.
> I checked that the settings are all optimized, but who knows what Asus
> changed?
> 

So, Stefan Esser (se_at_) hit me with a clue bat and asked what
ifconfig shows for the speed.

Well, it's 100baseTX.  Not too surprising that it maxes out at
12MBps.

Up until recently the speed was always automatically set to
1000baseTX.  AFAIK nothing has changed in regards to the hardware
(contollers, switches, etc.).

Anyway, I'll try setting mediaopts in rc.conf and see what happens.

-- 
Gary Jennejohn
Received on Sun Mar 18 2018 - 15:13:50 UTC

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