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57 lines
2.9 KiB
ReStructuredText
57 lines
2.9 KiB
ReStructuredText
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=================================================================
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Marvell Odyssey PEM Performance Monitoring Unit (PMU UNCORE)
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=================================================================
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The PCI Express Interface Units(PEM) are associated with a corresponding
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monitoring unit. This includes performance counters to track various
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characteristics of the data that is transmitted over the PCIe link.
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The counters track inbound and outbound transactions which
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includes separate counters for posted/non-posted/completion TLPs.
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Also, inbound and outbound memory read requests along with their
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latencies can also be monitored. Address Translation Services(ATS)events
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such as ATS Translation, ATS Page Request, ATS Invalidation along with
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their corresponding latencies are also tracked.
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There are separate 64 bit counters to measure posted/non-posted/completion
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tlps in inbound and outbound transactions. ATS events are measured by
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different counters.
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The PMU driver exposes the available events and format options under sysfs,
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/sys/bus/event_source/devices/mrvl_pcie_rc_pmu_<>/events/
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/sys/bus/event_source/devices/mrvl_pcie_rc_pmu_<>/format/
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Examples::
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# perf list | grep mrvl_pcie_rc_pmu
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mrvl_pcie_rc_pmu_<>/ats_inv/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ats_inv_latency/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ats_pri/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ats_pri_latency/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ats_trans/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ats_trans_latency/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_inflight/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_reads/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_req_no_ro_ebus/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_req_no_ro_ncb/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_tlp_cpl_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_tlp_dwords_cpl_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_tlp_dwords_npr/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_tlp_dwords_pr/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_tlp_npr/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ib_tlp_pr/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_inflight_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_merges_cpl_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_merges_npr_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_merges_pr_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_reads_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_tlp_cpl_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_tlp_dwords_cpl_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_tlp_dwords_npr_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_tlp_dwords_pr_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_tlp_npr_partid/ [Kernel PMU event]
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mrvl_pcie_rc_pmu_<>/ob_tlp_pr_partid/ [Kernel PMU event]
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# perf stat -e ib_inflight,ib_reads,ib_req_no_ro_ebus,ib_req_no_ro_ncb <workload>
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