Hi Sara,
To address your question on “show err”, your output is displaying running
counts for the l2-output, l2-learn and l2-input node wrt how many packets each
node processed. These are not error counts, unless the “Reason” column
indicate some kind of error. The CLI name “show err” is mis-leading in that it
is showing stats kept by VPP nodes for various reasons, not just errors. I
typically tell people to use the CLI “show node counters” which is more
appropriate and produce the same output. The CLI “show err” was there for
historical reasons and kept for backward compatibility. You are welcome to
keep on using “show err” as it is shorter and faster to type.
Regards,
John
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Sara Gittlin
Sent: Thursday, March 22, 2018 8:56 AM
To: vpp-dev@lists.fd.io
Subject: Re: [vpp-dev] Very poor performance vm to vm via VPP vhostuser
in the show err output i see that l2-output l2-learn l2-input counters are
continuously incremented :
show err
Count Node Reason
11 l2-output L2 output packets
11 l2-learn L2 learn packets
11 l2-input L2 input packets
3 l2-flood L2 flood packets
8479644 l2-output L2 output packets
8479644 l2-learn L2 learn packets
8479644 l2-input L2 input packets
On Thu, Mar 22, 2018 at 11:59 AM, Sara Gittlin
<sara.gitt...@gmail.com<mailto:sara.gitt...@gmail.com>> wrote:
Hello
i setup 2 vm connected to VPP as per the guide :
https://wiki.fd.io/view/VPP/Use_VPP_to_connect_VMs_Using_Vhost-User_Interface
The performance looks very bad very low pps and large latencies
udp pkt size 100B - throughput 500Mb
average latency is 900us
i have 2 PMDs threads (200% cpu) in the host, in the VMs i see low
cpu load (10%)
Please can you tell me what is wrong with my setup ?
Thank you in advance
- Sara
