Re: (heap 1024 82721 1933216)

[Daniel Colascione <dancol@dancol.org>]

On 01/18/2014 06:07 AM, Eli Zaretskii wrote:
>> Date: Sat, 18 Jan 2014 05:51:26 -0800
>> From: Daniel Colascione <dancol@dancol.org>
>> CC: emacs-devel@gnu.org
>>
>> On 01/18/2014 05:50 AM, Eli Zaretskii wrote:
>>>> Date: Sat, 18 Jan 2014 05:39:30 -0800
>>>> From: Daniel Colascione <dancol@dancol.org>
>>>>
>>>> On Emacs trunk, I recently got into a situation where Emacs had a vsize
>>>> of over 6GB. After killing all buffers, garbage-collect reported (heap
>>>> 1024 82721 1933216) as the most interesting part of its on its return
>>>> value. dlmalloc's free memory retention seems a bit severe here. Are we
>>>> just badly fragmenting the heap?
>>>
>>> Buffers are not allocated off the heap, as you well know.
>>
>> No, but their buffer locals might be.
>
> I find it hard to believe that buffer locals could devour gigabytes of
> memory, no matter what fragmentation did we cause.

I agree and never said they were --- I was just trying to eliminate as 
many GC roots as possible. Anyway, that's not the point: there's still 
2GB of accounted memory sitting there unused.