Default `cpu-map` for HAProxy 2.0?

Help!
1

I am upgrading from HAProxy 1.8 to 2.2. The release notes for 2.0.0 say:

much more scalable multi-threading, which is even enabled by default on
platforms where it was successfully tested ; by default, as many threads
are started as the number of CPUs haproxy is allowed to run on. This
removes a lot of configuration burden in VMs and containers ;

From what I understand, nbthread will now automatically be set to the number of CPU cores. As an optimisation, my configs also contain the cpu-map directive to bind threads to specific CPUs. It is not clear to me whether this now happens automatically as well. I am unable to find a default value for cpu-map in the documentation. Could someone enlighten me?

All my configs contain the following statements:

nbproc 1
nbthread <number of CPU cores>
cpu-map auto:1/1-<number of CPU cores> 0-<number of CPU cores - 1>

E.g.:

nbproc 1
nbthread 4
cpu-map auto:1/1-4 0-3
2

Hi,

I usually don’t set cpu-map unless I see poor performance with default set-up set from HAProxy.