Re: FlameGraph of mlx4 early drop with order-0 pages

2016-04-17 Thread Mel Gorman
On Sun, Apr 17, 2016 at 07:24:32PM +0200, Jesper Dangaard Brouer wrote: > On Sun, 17 Apr 2016 14:23:57 +0100 > Mel Gorman wrote: > > > > Signing off, heading for the plane soon... see you at MM-summit! > > > > Indeed and we'll slap some sort of plan together. If there is a slot free, > > we mi

Re: FlameGraph of mlx4 early drop with order-0 pages

2016-04-17 Thread Jesper Dangaard Brouer
On Sun, 17 Apr 2016 14:23:57 +0100 Mel Gorman wrote: > > Signing off, heading for the plane soon... see you at MM-summit! > > Indeed and we'll slap some sort of plan together. If there is a slot free, > we might spend 15-30 minutes on it. Failing that, we'll grab a table > somewhere. We'll see

Re: FlameGraph of mlx4 early drop with order-0 pages

2016-04-17 Thread Mel Gorman
On Fri, Apr 15, 2016 at 09:40:34PM +0200, Jesper Dangaard Brouer wrote: > Hi Mel, > > I did an experiment that you might find interesting. Using Brenden's > early drop with eBPF in the mxl4 driver. I changed the mlx4 driver to > use order-0 pages. It usually use order-3 pages to amortize the co

FlameGraph of mlx4 early drop with order-0 pages

2016-04-15 Thread Jesper Dangaard Brouer
Hi Mel, I did an experiment that you might find interesting. Using Brenden's early drop with eBPF in the mxl4 driver. I changed the mlx4 driver to use order-0 pages. It usually use order-3 pages to amortize the cost of calling the page allocator (which is problematic for other reasons, like mem