Re: [PATCH 4/4] workqueue: slash half memory usage in 32bit system

[Tejun Heo]

Hello,

On Tue, Jun 02, 2020 at 08:08:10AM +0800, Lai Jiangshan wrote:
> It is not noticable from the "free" command.
> By counting the number of allocated pwq (mainly percpu pwq),
> it saves 20k in my simple kvm guest (4cpu).
> I guess it highly various in different boxes with various
> kernel modules loaded.

Hmm... I find it difficult to judge in any direction. 32 bit machines are
smaller and have less of everything - including CPUs and workqueues
themselves, so while changing configuration for 32bit systems would reduce
memory usage the impact isn't gonna be that big either and I have no data
supporting whether the reduction is gonna help or hurt.

Thanks.

-- 
tejun