On Wed, Mar 27, 2019 at 3:34 PM Jay Pipes <jaypipes@gmail.com> wrote:
On 03/27/2019 01:35 AM, Massimo Sgaravatto wrote:
No, we are not using Kolla. We use the CentOS rpms to deploy
We contacted DELL support for this problem. Since iperf works without problems, they suggest there is something 'wrong' (or at least incompatible with that hw) in the used software (i.e OpenStack and/or related dependencies).
As I said disabling tx-checksum-ipv4 I don't see anymore the problem, but the DELL support guy claims that this is not safe because checksumming is not done.
I thought that disabling tx-checksum-ipv4simply means that the checksum is done in software instead of hardware (so just a matter of performance), Am I wrong ?
No, you are correct. Whoever you spoke to at Dell didn't know what they were talking about.
+1 we found out that the bad machines had the same firmware for the NIC and got new ones shipped and much joy afterwards.
-jay
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