How to print kernel call stack in Mac OS X

Question

In Linux, I can use echo t > /proc/sysrq-trigger to dump the kernel call stack of all threads in system.

Is there any method in Mac OS X for the same purpose? or any method to dump kernel stack of one process?

score 1 · Answer 1 · answered Aug 29 '19 at 20:57

Short answer: procexp 0 threads (as root) will do the trick, where procexp is "Process Explorer" from http://newosxbook.com/tools/procexp.html .

Slightly Longer answer: - Dtrace is overkill and will need SIP disablement - stackshot is deprecated since its underlying syscall (#365) was removed - A replacement, stack_snapshot_with_config(#491) can be used programmatically as well (this is what drives the above tool)

score 0 · Answer 2 · answered Mar 22 '16 at 10:08

The answer is probably dtrace. I know Instruments.app (or iprofiler) can do probe based profiling, so it takes periodic stack traces. (user or kernel; your choice) As far as I'm aware this is all based on dtrace, although I don't know it well enough to be able to tell you a way to take a one-off trace.

score 0 · Answer 3 · answered Oct 08 '16 at 08:37

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Hmm... I didn't code on Mac OS X for serval years. But a tool with name 'stackshot' can help you do this. Try to google it to get the usage. :-)

answered Oct 08 '16 at 08:37

Sid Moore

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score 0 · Answer 4 · answered Jul 08 '19 at 14:55

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From http://www.brendangregg.com/DTrace/DTrace-cheatsheet.pdf:

sudo dtrace -n 'fbt:::entry { stack(10); ustack(5) }'

prints 10 kernel frames, 5 userland frames

answered Jul 08 '19 at 14:55

Vivek

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How to print kernel call stack in Mac OS X

4 Answers4