Re: [RFC PATCH v2 3/5] padata: dispatch works on different nodes

[Gang Li]

On 2023/12/13 07:40, Tim Chen wrote:
> >   
> >   	list_for_each_entry(pw, &works, pw_list)
> > -		queue_work(system_unbound_wq, &pw->pw_work);
> > +		if (job->numa_aware)
> > +			queue_work_node((++nid % num_node_state(N_MEMORY)),
>
> The nid may fall on a NUMA node with only memory but no CPU.  In that case you
> may still put the work on the unbound queue. You could end up on one CPU node for work
> from all memory nodes without CPU. Is this what you want?  Or you would
> like to spread them between CPU nodes?
>
> Tim

Hi, thank you for your reminder. My intention was to fully utilize all
memory bandwidth.

For memory nodes without CPUs, I also hope to be able to spread them on
different CPUs.