Don't forget  to run a ping with a size of  8500 and "do not fragment" flag.
This  will really prove that you are no longer using the small MTU anywhere on the path.

Best Regards,
Strahil Nikolov

On Jul 9, 2019 17:27, Mark Steele <msteele@telvue.com> wrote:
Thank you Strahil,

The MTU appears to be set to 1500 according to 'ifconfig'.

Mark

***
Mark Steele
CIO / VP Technical Operations | TelVue Corporation
TelVue - We Share Your Vision
16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
800.885.8886 x128 | msteele@telvue.com | http://www.telvue.com


On Tue, Jul 9, 2019 at 10:14 AM Strahil Nikolov <hunter86_bg@yahoo.com> wrote:
The first thing that comes to my mind is to check the network's MTU.
By default it is 1500, and I suppose you can go with MTU 9000
Also , check if OS is using MTU 9000

Best Regards,
Strahil Nikolov

В вторник, 9 юли 2019 г., 9:58:47 ч. Гринуич-4, Mark Steele <msteele@telvue.com> написа:


It seems that our oVirt instance never exceeds 550Mbps aggregate traffic (rx / tx) according to nvstat. I want to make sure that the negotiated speed, handshaking, etc. are all what I expect them to be from the OS level.

***
Mark Steele