Re: mlx5 order 9/10 allocations

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Majd,

how soon? I have plan to work patch on next week, 
i looks copy-paste of pointed Leon with some minor changes and applied to the different buffer.

> 21 июня 2018 г., в 14:20, Majd Dibbiny <majd@xxxxxxxxxxxx> написал(а):
> 
> 
>> On Jun 21, 2018, at 1:14 PM, Leon Romanovsky <leon@xxxxxxxxxx> wrote:
>> 
>>> On Wed, Jun 20, 2018 at 10:48:16AM +0300, Alexey Lyashkov wrote:
>>> Hi All,
>>> 
>>> while a lustre testing I have seen an very high ordered allocations was done by mlx5 driver.
>>> Similar bug reported agaist mlx4 driver in Lustre ticket https://jira.whamcloud.com/browse/LU-10736.
>>> As i see both fails related to the SGE array buffer allocation (sorry, i don’t know a good terms for it).
>>> But it uses a continues space, instead of fragmented.
>>> I have several questions about it
>>> What a reason for it? why don’t use a fragmented allocation and merge it logically as before for mlx4?
>> 
>> I don't know the reasons for it, but we are working to avoid such large
>> allocations, for example see commit 88ca8be0037 "IB/mlx5: Implement fragmented
>> completion queue (CQ)"
> Soon we are going to do it for QPs of mlx5 and mlx4 as well.
>> 
>> Thanks

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