linux-kernel - Re: [PATCH 2/5] mm: correct calculation of cgroup wb's bg_thresh in wb_over_bg

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Message-ID: <ZdTitdV_1awPhfkQ@slm.duckdns.org>
Date: Tue, 20 Feb 2024 07:34:45 -1000
From: Tejun Heo <tj@...nel.org>
To: Kemeng Shi <shikemeng@...weicloud.com>
Cc: willy@...radead.org, akpm@...ux-foundation.org,
	hcochran@...nelspring.com, mszeredi@...hat.com, axboe@...nel.dk,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] mm: correct calculation of cgroup wb's bg_thresh in
 wb_over_bg_thresh

Hello,

On Sun, Feb 18, 2024 at 10:35:41AM +0800, Kemeng Shi wrote:
> Hi Tejun, sorry for the late reply as I was on vacation these days.
> I agree that visibility is poor so I have to add some printks to debug.
> Actually, I have added per wb stats to improve the visibility as we
> only have per bdi stats (/sys/kernel/debug/bdi/xxx:x/stats) now. And I
> plan to submit it in a new series.
> I'd like to add a script to improve visibility more but I can't ensure
> the time to do it. I would submit the monitoring script with the per wb
> stats if the time problem does not bother you.

It has had poor visiblity for many many years, I don't think we're in any
hurry.

Thanks.

-- 
tejun