NetBSD Problem Report #59954

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Date: Sun,  1 Feb 2026 19:19:48 +0000 (UTC)
From: campbell+netbsd@mumble.net
Reply-To: campbell+netbsd@mumble.net
To: gnats-bugs@NetBSD.org
Subject: ddb(4): ps should have filter for on-CPU threads
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X-From4GNATS: "campbell+netbsd@mumble.net via gnats" <gnats-admin@NetBSD.org>

>Number:         59954
>Category:       kern
>Synopsis:       ddb(4): ps should have filter for on-CPU threads
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Feb 01 19:20:01 +0000 2026
>Originator:     Taylor R Campbell
>Release:        current, 11, 10, 9, ...
>Organization:
The NetDDB Foundacpu
>Environment:
>Description:
Often the threads of interest in ddb are those running on the CPU.

These are marked by `>' but you have to page through to find them.
>How-To-Repeat:
1. wedge the system
2. try to find what threads are on the CPU
3. get overwhelmed by ouptut
>Fix:
Add a /c modifier to `ps' to filter by those threads on the CPU.

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