Re: [DynInst_API:] Dyninst is taking 35 seconds to attach to Firefox

[Bill Williams <bill@xxxxxxxxxxx>]

On 07/07/2014 04:44 PM, Francis Deslauriers wrote:
> Hi folks,
>
> I tried to attach a Firefox process and it took Dyninst ~35 seconds.
> My mutator program forks and the child process exec firefox with the
> -h argument.
>
> Here is a pastebin where I used the time command and DYNINST_DEBUG_STARTUP=1 :
> http://pastebin.com/Tx5NhqpR
>
> Here is the code i used: http://pastebin.com/rVikLb6m
> Makefile : http://pastebin.com/3rvgFUWi
>
> Am i using Dyninst the wrong way? Is there something I can do to speed
> up the attaching? Maybe Firefox debug symbols are just too huge.
Firefox does have a large number of shared libraries with a large 
quantity of debug information, if memory serves, and your mutator looks 
fine. We will not attach *quickly* but 35 seconds seems rather extreme.
Are you working with the pre-8.2 tree? Did you configure Dyninst with 
RelWithDebInfo or Release mode? That sounds a lot like an unoptimized 
Dyninst build to me.
> Thank you,
>
> Francis
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--
--bw

Bill Williams
Paradyn Project
bill@xxxxxxxxxxx