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This functionality is based on recently introduced sysfs attributes for
Intel® Xeon® Scalable processor family (code name Skylake-SP):
Commit bb42b3d397 ("perf/x86/intel/uncore: Expose an Uncore unit to IIO PMON mapping")
Mode is intended to provide four I/O performance metrics in MB per each
PCIe root port:
- Inbound Read: I/O devices below root port read from the host memory
- Inbound Write: I/O devices below root port write to the host memory
- Outbound Read: CPU reads from I/O devices below root port
- Outbound Write: CPU writes to I/O devices below root port
Each metric requiries only one uncore event which increments at every 4B
transfer in corresponding direction. The formulas to compute metrics
are generic:
#EventCount * 4B / (1024 * 1024)
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey V Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210419094147.15909-4-alexander.antonov@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
35 lines
1.1 KiB
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35 lines
1.1 KiB
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#
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# List of known perf commands.
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# command name category [deprecated] [common]
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#
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perf-annotate mainporcelain common
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perf-archive mainporcelain common
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perf-bench mainporcelain common
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perf-buildid-cache mainporcelain common
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perf-buildid-list mainporcelain common
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perf-data mainporcelain common
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perf-diff mainporcelain common
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perf-c2c mainporcelain common
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perf-config mainporcelain common
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perf-evlist mainporcelain common
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perf-ftrace mainporcelain common
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perf-inject mainporcelain common
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perf-iostat mainporcelain common
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perf-kallsyms mainporcelain common
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perf-kmem mainporcelain common
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perf-kvm mainporcelain common
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perf-list mainporcelain common
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perf-lock mainporcelain common
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perf-mem mainporcelain common
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perf-probe mainporcelain full
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perf-record mainporcelain common
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perf-report mainporcelain common
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perf-sched mainporcelain common
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perf-script mainporcelain common
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perf-stat mainporcelain common
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perf-test mainporcelain common
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perf-timechart mainporcelain common
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perf-top mainporcelain common
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perf-trace mainporcelain audit
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perf-version mainporcelain common
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perf-daemon mainporcelain common
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