linux-kernel - Re: [PATCH linux-next 0/3] tools/delaytop: implement real-time keyboard interaction support

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Message-ID: <20250902115223765heW78u3qH__SmNLo1RlVM@zte.com.cn>
Date: Tue, 2 Sep 2025 11:52:23 +0800 (CST)
From: <xu.xin16@....com.cn>
To: <fan.yu9@....com.cn>, <akpm@...ux-foundation.org>
Cc: <wang.yaxin@....com.cn>, <corbet@....net>, <linux-kernel@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, <fan.yu9@....com.cn>,
        <yang.yang29@....com.cn>
Subject: Re: [PATCH linux-next 0/3] tools/delaytop: implement real-time keyboard interaction support

From: Fan Yu <fan.yu9@....com.cn>
> Current Limitations
> ===================
> The current delaytop implementation has two main limitations:
> 1) Static sorting only by CPU delay
> Forcing users to restart with different parameters to analyze
> other resource bottlenecks.
> 2) Memory delay information is always expanded
> Causing information overload when only high-level memory pressure
> monitoring is needed.
> 
> Improvements
> ============
> 1) Implemented dynamic sorting capability
> - Interactive key 'o' triggers sort mode.
> - Supports sorting by CPU/IO/Memory/IRQ delays.
> - Memory subcategories available in verbose mode.
>  * c - CPU delay (default)
>  * i - IO delay
>  * m - Total memory delay
>  * q - IRQ delay
>  * s/r/t/p/w - Memory subcategories (in verbose mode)
> 2) Added memory display modes
> - Compact view (default): shows aggregated memory delays.
> - Verbose view ('M' key): breaks down into memory sub-delays.
>  * SWAP - swapin delays
>  * RCL - freepages reclaim delays
>  * THR - thrashing delays
>  * CMP - compaction delays
>  * WP - write-protect copy delays
>

What about updating usages into Documentation/accounting/delay-accounting.rst ?

> 
> 
> Fan Yu (3):
>   tools/delaytop: add memory verbose mode support
>   tools/delaytop: add flexible sorting by delay field
>   tools/delaytop: add interactive mode with keyboard controls
> 
>  tools/accounting/delaytop.c | 347 +++++++++++++++++++++++++++++-------
>  1 file changed, 287 insertions(+), 60 deletions(-)

Other parts are ok except [PATCH 1/3]