Messages in this thread | | | Date | Wed, 18 Mar 2020 11:21:12 -0400 | From | Vijay Thakkar <> | Subject | Re: [PATCH v5 2/3] perf vendor events amd: add Zen2 events |
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> floating point: > fpu_pipe_assignment.total > [Total number of fp uOps] > > > Metric Groups: >
I just realized that I did not add back the counters for per pipe total assignment as I said in the commit message. Patch 3/3 adds the total uOp assignments per pipe for Zen1 based processors. Although the PPR for Matisse does not list these counters, I can still sample them on my Ryzen 3900X system and they seem to report correct numbers. For example, here is the result of running:
$> perf stat -e r100,r200,r400,r800,rf00 ls
$> Performance counter stats for 'ls':
5,047 r100:u 5,236 r200:u 31,300 r400:u 2,040 r800:u 43,623 fpu_pipe_assignment.total:u
Note that the per pipe total counters add up the overall total, which makes me think I should submit a v6 of this patch adding the per pipe totals for zen2 as well, especially since it is mentioned in the commit message.
-Vijay
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