[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 #35 from Robert Walker <bob.mt.wya at gmail.com> ---
One of the changes AMD with the change to the Ryzen 2000 series was to
harmonise the inter-CCX latency with the internal CCX latency.

This change, and general issue, has been covered very well by PC Perspective,
e.g.:
https://www.pcper.com/reviews/Processors/Ryzen-7-2700X-and-Ryzen-5-2600X-Review-Zen-Matures

As has been stated AMD have implemented an architecture (Zen), which requires
NUMA tweaks to obtain optimum performance.

It would be interesting to know if anyone is experiencing this issue with the
second generation Ryzen CPUS (2000) and if it is perhaps measureably less
severe?

Also the inter-CCX latency is tied to the Infinity fabric speed, which in turn
is tied to the system RAM frequency. So again it would be useful to get some
performance metrics from Ryzen systems with higher performance system RAM.

Perhaps it would be instructive for AMD Ryzen owners to plot their own system
inter-CCX times?

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