> 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 ��.n��������+%������w��{.n�����{���fk��ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
