$ sudo dmesg | grep IOMMU [ 0.498593] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported [ 0.500507] pci 0000:00:00.2: AMD-Vi: Found IOMMU cap 0x40 [ 0.502011] perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4 counters/bank). [ 1.113195] AMD-Vi: AMD IOMMUv2 driver by Joerg Roedel $ sudo perf list | grep iommu amd_iommu_0/cmd_processed/ [Kernel PMU event] amd_iommu_0/cmd_processed_inv/ [Kernel PMU event] amd_iommu_0/ign_rd_wr_mmio_1ff8h/ [Kernel PMU event] amd_iommu_0/int_dte_hit/ [Kernel PMU event] amd_iommu_0/int_dte_mis/ [Kernel PMU event] amd_iommu_0/mem_dte_hit/ [Kernel PMU event] amd_iommu_0/mem_dte_mis/ [Kernel PMU event] amd_iommu_0/mem_iommu_tlb_pde_hit/ [Kernel PMU event] amd_iommu_0/mem_iommu_tlb_pde_mis/ [Kernel PMU event] amd_iommu_0/mem_iommu_tlb_pte_hit/ [Kernel PMU event] amd_iommu_0/mem_iommu_tlb_pte_mis/ [Kernel PMU event] amd_iommu_0/mem_pass_excl/ [Kernel PMU event] amd_iommu_0/mem_pass_pretrans/ [Kernel PMU event] amd_iommu_0/mem_pass_untrans/ [Kernel PMU event] amd_iommu_0/mem_target_abort/ [Kernel PMU event] amd_iommu_0/mem_trans_total/ [Kernel PMU event] amd_iommu_0/page_tbl_read_gst/ [Kernel PMU event] amd_iommu_0/page_tbl_read_nst/ [Kernel PMU event] amd_iommu_0/page_tbl_read_tot/ [Kernel PMU event] amd_iommu_0/smi_blk/ [Kernel PMU event] amd_iommu_0/smi_recv/ [Kernel PMU event] amd_iommu_0/tlb_inv/ [Kernel PMU event] amd_iommu_0/vapic_int_guest/ [Kernel PMU event] amd_iommu_0/vapic_int_non_guest/ [Kernel PMU event] intel_iommu:bounce_map_sg [Tracepoint event] intel_iommu:bounce_map_single [Tracepoint event] intel_iommu:bounce_unmap_single [Tracepoint event] intel_iommu:map_sg [Tracepoint event] intel_iommu:map_single [Tracepoint event] intel_iommu:unmap_sg [Tracepoint event] intel_iommu:unmap_single [Tracepoint event] iommu:add_device_to_group [Tracepoint event] iommu:attach_device_to_domain [Tracepoint event] iommu:detach_device_from_domain [Tracepoint event] iommu:io_page_fault [Tracepoint event] iommu:map [Tracepoint event] iommu:remove_device_from_group [Tracepoint event] iommu:unmap [Tracepoint event] $ sudo perf stat -e 'amd_iommu_0/cmd_processed/, amd_iommu_0/cmd_processed_inv/, amd_iommu_0/ign_rd_wr_mmio_1ff8h/, amd_iommu_0/int_dte_hit/, amd_iommu_0/int_dte_mis/, amd_iommu_0/mem_dte_hit/, amd_iommu_0/mem_dte_mis/, amd_iommu_0/mem_iommu_tlb_pde_hit/, amd_iommu_0/mem_iommu_tlb_pde_mis/, amd_iommu_0/mem_iommu_tlb_pte_hit/, amd_iommu_0/mem_iommu_tlb_pte_mis/, amd_iommu_0/mem_pass_excl/, amd_iommu_0/mem_pass_pretrans/, amd_iommu_0/mem_pass_untrans/, amd_iommu_0/mem_target_abort/, amd_iommu_0/mem_trans_total/, amd_iommu_0/page_tbl_read_gst/, amd_iommu_0/page_tbl_read_nst/, amd_iommu_0/page_tbl_read_tot/, amd_iommu_0/smi_blk/, amd_iommu_0/smi_recv/, amd_iommu_0/tlb_inv/, amd_iommu_0/vapic_int_guest/, amd_iommu_0/vapic_int_non_guest/' sleep 10 Performance counter stats for 'system wide': 30 amd_iommu_0/cmd_processed/ (33.31%) 17 amd_iommu_0/cmd_processed_inv/ (33.34%) 0 amd_iommu_0/ign_rd_wr_mmio_1ff8h/ (33.36%) 374 amd_iommu_0/int_dte_hit/ (33.39%) 29 amd_iommu_0/int_dte_mis/ (33.44%) 394 amd_iommu_0/mem_dte_hit/ (33.46%) 9,117 amd_iommu_0/mem_dte_mis/ (33.45%) 5 amd_iommu_0/mem_iommu_tlb_pde_hit/ (33.46%) 819 amd_iommu_0/mem_iommu_tlb_pde_mis/ (33.42%) 2 amd_iommu_0/mem_iommu_tlb_pte_hit/ (33.39%) 1,012 amd_iommu_0/mem_iommu_tlb_pte_mis/ (33.37%) 0 amd_iommu_0/mem_pass_excl/ (33.34%) 0 amd_iommu_0/mem_pass_pretrans/ (33.29%) 1,553 amd_iommu_0/mem_pass_untrans/ (33.28%) 0 amd_iommu_0/mem_target_abort/ (33.28%) 39,207 amd_iommu_0/mem_trans_total/ (33.27%) 0 amd_iommu_0/page_tbl_read_gst/ (33.27%) 1,625 amd_iommu_0/page_tbl_read_nst/ (33.27%) 901 amd_iommu_0/page_tbl_read_tot/ (33.27%) 0 amd_iommu_0/smi_blk/ (33.7%) 0 amd_iommu_0/smi_recv/ (33.28%) 0 amd_iommu_0/tlb_inv/ (33.27%) 0 amd_iommu_0/vapic_int_guest/ (33.27%) 420 amd_iommu_0/vapic_int_non_guest/ (33.27%) 10.003004096 seconds time elapsed