After commenting out the following configuration, the CPU usage went down
when I set the interfaces to interrupt mode.
session {
use-app-socket-api enable
}
Otherwise, the output for 'show runtime' will have 'session-queue' running
in polling mode. However once I start to send traffic, the CPU
Now I removed the tap interfaces, and started from scratch again. However
it doesn't work either. This is what I did:
DBGvpp# set interface state eth1 up
DBGvpp# set interface state eth2 up
DBGvpp# set interface rx-mode eth1 interrupt
DBGvpp# set interface rx-mode eth2 interrupt
DBGvpp# show inter
Xiaodong,
That tip about LCP is a good one - the tap interfaces you created (or that
linux-cp created for you) will be in polling mode. virtio/tap does allow
for adaptive as well. And indeed, even if my physical interfaces (Intel
X710 10G and Intel i810 100G) are showing adaptive mode, the tap is
Hi Xiaodong,
What is the output of show int rx-placement
-br
Mohsin
From: on behalf of Xiaodong Xu
Reply-To: "vpp-dev@lists.fd.io"
Date: Wednesday, July 20, 2022 at 8:44 PM
To: "vpp-dev@lists.fd.io"
Subject: [vpp-dev] CPU usage for vpp
Hi,
When I start vpp, the CPU usage will be close to 1
Hi Jim,
Thanks for the reply. I checked the source code and the change is included.
Do we have a list for the NIC drivers that support interrupt mode?
Regards,
Xiaodong
On Wed, Jul 20, 2022 at 1:16 PM Jim Thompson via lists.fd.io wrote:
> the other thing to note is that not all NIC drivers sup
Hi Pim,
Thanks for the quick reply. I did set the interfaces up before changing the
rx-mode. I tried 'adaptive' mode and it didn't make any difference either.
BTW, I'm using Linux control plane plugin and created a tap interface for
each DPDPK interface. Another issue I'm having is that 'show
har
the other thing to note is that not all NIC drivers support setting
interrupt and/or adaptive mode.
You should also ensure that you have I2e502306e27bd98f8037d1a0a396201e099b50b5
On Wed, Jul 20, 2022 at 2:06 PM Pim van Pelt wrote:
>
> Hoi Xiaodong,
>
> One thing to note, is that the interface mu
Hoi Xiaodong,
One thing to note, is that the interface must be state 'up' before changes
are affected. If I set to 'adaptive' (best of both worlds, interrupts in
low load, polling in higher load':
DBGvpp# set interface rx-mode GigabitEthernet3/0/0 adaptive
DBGvpp# set interface state GigabitEt
