Re: heartbeat panic: swapping?

On Sun, Feb 22, 2026 at 11:16:21AM +0100, Taylor R Campbell wrote:
> It's unlikely to be directly related to swapping because softints are
> forbidden to do anything that sleeps waiting for memory, and you would
> be more likely hit an ASSERT_SLEEPABLE() panic immediately if such a
> path were even attempted.

When I have lots of I/O happening (e.g. when installing all
dependencies for libreoffice, chromium, something like that, into a
tmpfs) _all_ tasks on the machine get slowed down a lot, perhaps
because it's swapping. But good to know that this shouldn't have an
effect on this level.

> In crash(8), can you get the output of the following commands?
> 
> ps
> ps/w
> show all tstiles
> 
> In the ps output, you'll see various softXXX/N lines for the softint
> threads (softnet, softclock, ...) on cpuN.  Can you also get the
> output of
> 
> bt/a 0xffff0123abcd3210
> 
> for the lwp addr in each of those lines?
> 
> And, can you file a PR with all this information?

I've filed 60029 with all the details you requested.

Thanks,
 Thomas