[PATCH] [v4] malloc: Consistently apply trim_threshold to all heaps [BZ #17195]

[Julian Taylor]

On 02/18/2015 04:09 PM, Mel Gorman wrote:
> On Wed, Feb 18, 2015 at 02:26:20PM +0100, Julian Taylor wrote:
>> On 02/18/2015 11:29 AM, Mel Gorman wrote:
>>
>> I recall something along these lines for the original reasoning why the
>> trim was not applied to thread arenas.
> 
> Is there any chance you can remember keywords in the discussion? The
> changelog is completely void of information. Worse, it would have been
> harder to hit this problem originally because new areas were only created
> when contention occurred. If there was strong motivation for the pagesz
> value then it's possible that it no longer applies.
> 

it was probably BZ#11261 that I remembered, its about excessive virtual
memory usage due to arenas.
As they are now trimmed less aggressively are we making it worse?