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Re: [Libunwind-devel] unw_backtrace(): Performance slowdown for ARM?


From: Dave Watson
Subject: Re: [Libunwind-devel] unw_backtrace(): Performance slowdown for ARM?
Date: Wed, 17 Jan 2018 07:55:49 -0800
User-agent: Mutt/1.6.0 (2016-04-01)

> > I didn't notice anything in particular looking at the commit logs.
> > I'll try and repro when I get a chance
> 
> arm_find_proc_info() seems to start out trying eh_frame tables. Isn't
> it always best on ARM to start looking in the exidx tables?

Sounds reasonable to me, although I'm not an arm expert.  Did the
default change somewhere?  I couldn't find anything looking at the
history.

I opened an issue https://github.com/libunwind/libunwind/issues/63



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