chanamatlu ; Jeffery Yoder
Subject: Re: [PATCH v2] IB/mlx5: Reduce max order of memory allocated for xlt
update
On Thu, Mar 25, 2021 at 11:39:28AM -0300, Jason Gunthorpe wrote:
> On Tue, Mar 23, 2021 at 09:27:38PM -0700, Aruna Ramakrishna wrote:
>
> > > Do you have benchmarks
On Thu, Mar 25, 2021 at 11:39:28AM -0300, Jason Gunthorpe wrote:
> On Tue, Mar 23, 2021 at 09:27:38PM -0700, Aruna Ramakrishna wrote:
>
> > > Do you have benchmarks that show the performance of the high order
> > > pages is not relavent? I'm a bit surprised to hear that
> > >
> >
> > I guess my
On Tue, Mar 23, 2021 at 09:27:38PM -0700, Aruna Ramakrishna wrote:
> > Do you have benchmarks that show the performance of the high order
> > pages is not relavent? I'm a bit surprised to hear that
> >
>
> I guess my point was more to the effect that an order-8 alloc will
> fail more often than
> On Mar 23, 2021, at 4:13 PM, Jason Gunthorpe wrote:
>
> On Tue, Mar 23, 2021 at 12:41:51PM -0700, Aruna Ramakrishna wrote:
>> There is a far greater possibility of an order-8 allocation failing,
>> esp. with the addition of __GFP_NORETRY , and the code would have to
>> fall back to a
On Tue, Mar 23, 2021 at 12:41:51PM -0700, Aruna Ramakrishna wrote:
>There is a far greater possibility of an order-8 allocation failing,
>esp. with the addition of __GFP_NORETRY , and the code would have to
>fall back to a lower order allocation more often than not (esp. on a
>long
On Tue, Mar 16, 2021 at 01:09:01PM +, Praveen Kumar Kannoju wrote:
> To update xlt (during mlx5_ib_reg_user_mr()), the driver can request up to
> 1 MB (order-8) memory, depending on the size of the MR. This costly
> allocation can sometimes take very long to return (a few seconds),
>
; j...@ziepe.ca;
linux-r...@vger.kernel.org; linux-kernel@vger.kernel.org
Cc: Rajesh Sivaramasubramaniom ; Rama
Nichanamatlu ; Aruna Ramakrishna
; Jeffery Yoder ;
Praveen Kannoju
Subject: [PATCH v2] IB/mlx5: Reduce max order of memory allocated for xlt update
To update xlt (during
To update xlt (during mlx5_ib_reg_user_mr()), the driver can request up to
1 MB (order-8) memory, depending on the size of the MR. This costly
allocation can sometimes take very long to return (a few seconds),
especially if the system is fragmented and does not have any free chunks
for orders >=
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