Messages in this thread | | | Date | Wed, 12 Apr 2023 14:07:36 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC PATCH] sched/fair: Make tg->load_avg per node |
| |
On Thu, Mar 30, 2023 at 01:45:57PM -0400, Daniel Jordan wrote:
> The topology of my machine is different from yours, but it's the biggest > I have, and I'm assuming cpu count is more important than topology when > reproducing the remote accesses. I also tried on
Core count definitely matters some, but the thing that really hurts is the cross-node (and cross-cache, which for intel happens to be the same set) atomics.
I suppose the thing to measure is where this cost rises most sharply on the AMD platforms -- is that cross LLC or cross Node?
I mean, setting up the split at boot time is fairly straight forward and we could equally well split at LLC.
| |