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["mc36" <>]

documenting....


-------- Forwarded Message --------
Subject: Re: freeRouter rpms for CentOS and Fedora
Date: Wed, 9 Feb 2022 06:20:28 +0100
From: mc36 <>
Reply-To: 
To: 

hi,

On 2/9/22 05:59, mc36 wrote:
> > Maybe vpp runs workers in some specific way, it can run on cores
> > listed in isolcpus=1-4 kernel.
> to do that, 0 1 2   1 3 4   would do the trick...
> but as your previous mail, maybe 0 1 1   1 2 2   ? :)

so i use the dpdk builtin from their examples to spwan the forwarding loop...
https://github.com/mc36/freeRouter/blob/c6c22bada52209759197736aaceed80ffe063878/misc/native/p4dpdk.h#L475
could you verify please if it pins itself to the isolcpus?

i personally don't do such because my vcpus easily forward
at 5gbps from an af_packet interface to my ixgbe,
(it's expensive because of the user-kernel switching)
and does the 10gbps between the two ports of the nic...
but it's native...
so my questions:
-you said kvm, but is it on a multi-socket server?
-is the qemu taskset on the host too, to the nic's socket?
-is the nic->socket on the same numa node on the host?
-is the ram->socket on the same numa node on the host?

thanks,
cs


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