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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Alexander Antonov
f9ed693e8b
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 <[email protected]>
Signed-off-by: Alexander Antonov <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexey V Bayduraev <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
#
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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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