Re: [PATCH linux next] tools/accounting/delaytop: add delaytop to record top-n task delay

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> Solution
> ========
> To address these limitations, we introduce the "delaytop" with
> the following capabilities:
> 1. system view: monitors latency metrics (CPU, I/O, memory, IRQ,
> etc.) for all system processes
> 2. supports field-based sorting (e.g., default sort by CPU latency
> in descending order)
> 3. dynamic interactive interface:
> focus on specific processes with --pid;
> limit displayed entries with --processes 20;
> control monitoring duration with --iterations;
For latency-sensitive scenarios, such as industrial control, communications,
or automotive, I think this tool is useful. And it may be better if it support
showing whole delay of system by reading PSI, just like the first few lines of
information output by the top command.




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