[Bug 43277] Far Cry 3 has poor performance (Ryzen CPU-specific issue?)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=43277

--- Comment #32 from Ivan Kalvachev <iive at yahoo.com> ---
Any new development on this issue?

Few days ago we talked on IRC and we did a bit of experimenting.

I think I found mistake in one of the experiments we did.

It seems that the NUMA nodes, or as AMD calls them CCX are formed by 4 physical
cores. (I thought they are 2 previously).

On your processor Ryzen 1600, you have 2x CCX and each one has 3 physical cores
(one is disabled).

So the layout looks like this:
ccx/node0 { (0,1),(2,3),(4,5)   }
ccx/node1 { (6,7),(8,9),(10,11) }

Here, (0,1) are cpu's threads that run on same physical core.

So, when you disabled half of the cores, you disabled one whole ccx/node and
this avoids the slow interconnect between nodes.

When I asked you to set affinity for wineserver and fc3 on cpu 5 & 7, I thought
they would be on the same node, but they are actually on different ones.

Could you repeat the experiment, but this time with cpu3&5 ? Or just set
affinity to the first 6 cores on all wine related programs (wineserver and
everything that is *.exe).

-- 
Do not reply to this email, post in Bugzilla using the
above URL to reply.
You are receiving this mail because:
You are watching all bug changes.