Performance drop due to alloc_workqueue() misuse and recent change

[Tejun Heo]

Hello, again.

On Mon, Dec 04, 2023 at 04:03:47PM +0000, Naohiro Aota wrote:
...
> In summary, we misuse max_active, considering it is a global limit. And,
> the recent commit introduced a huge performance drop in some cases.  We
> need to review alloc_workqueue() usage to check if its max_active setting
> is proper or not.

Can you please test the following branch?

 https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git unbound-system-wide-max_active

Thanks.

-- 
tejun