[Mesa-dev] [PATCH 00/21] Reduce ir_variable memory usage

[Ian Romanick]

On 05/30/2014 05:52 PM, Kenneth Graunke wrote:
> On Friday, May 30, 2014 11:07:03 AM Eric Anholt wrote:
>> Ian Romanick <idr at freedesktop.org> writes:
>>> This series reduces the memory usage of ir_variable quite significantly.
>>>
>>> The first couple patches add a mechanism to determine the amount of
>>> memory used by any kind of IR object.  This is used to collect the data
>>> that is shown in the commit messages through the series.
> 
> I think that talloc can give you this type of information for basically free - 
> I'd rather see an implementation of the ralloc API atop talloc, and then just 
> turn the memory debugging on.  This is quite a bit of code, and incomplete...

It could give some of the same information, but not quite all.  For
example, if I want to know how much memory is used by
ir_dereference_record, I want to know how much is used by the
ir_dereference_record objects and the ir_dereference_record::name
allocations too.  Since everything in the IR gets (eventually)
reparented to the IR list, I don't see a way to get that information
from just the talloc tracking.

You were a lot deeper in the guts of talloc, so you may well know things
about it that I do not. :)


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