Re: [PATCH] of: cache phandle nodes to decrease cost of of_find_node_by_phandle()

From: Chintan Pandya
Date: Mon Feb 05 2018 - 07:23:23 EST




My question was trying to determine whether the numbers reported above
are for a debug configuration or a production configuration.
My reported numbers are from debug configuration.

not a production configuration, I was requesting the numbers for a
production configuration.
I'm working on it. But please expect some delay in my response for this. As I mentioned earlier, I need to work with few teams to get these numbers.


show a significant boot time reduction from the patch then there is
less justification for adding complexity to the existing code. I
prefer to use simpler data structures and algorithms __if__ extra
complexity does not provide any advantage. The balance between
complexity and benefits is a core software engineering issue.

Ok

I don't have a set up for taking these numbers in perf mode. For
that, I need to ask some other team and round trip follow ups. In my
set up, I rely on serial console logging which gets disabled in perf
mode.


Thanks,

Frank


Chintan


Chintan
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