Re: [PATCH v2 0/2] nvmet: support unbound_wq for RDMA and TCP

[Christoph Hellwig]

On Wed, Jul 17, 2024 at 05:14:49PM +0800, Ping Gan wrote:
> When running nvmf on SMP platform, current nvme target's RDMA and
> TCP use bounded workqueue to handle IO, but when there is other high
> workload on the system(eg: kubernetes), the competition between the 
> bounded kworker and other workload is very radical. To decrease the
> resource race of OS among them, this patchset will enable unbounded
> workqueue for nvmet-rdma and nvmet-tcp; besides that, it can also
> get some performance improvement. And this patchset bases on previous
> discussion from below session.

So why aren't we using unbound workqueues by default?  Who makea the
policy decision and how does anyone know which one to chose?