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add page fault perf events
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@ -196,6 +196,8 @@
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M(PerfCpuMigrations, "Number of times the process has migrated to a new CPU") \
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M(PerfAlignmentFaults, "Number of alignment faults. These happen when unaligned memory accesses happen; the kernel can handle these but it reduces performance. This happens only on some architectures (never on x86).") \
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M(PerfEmulationFaults, "Number of emulation faults. The kernel sometimes traps on unimplemented instructions and emulates them for user space. This can negatively impact performance.") \
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M(PerfPageFaultsMinor, "This counts the number of minor page faults. These did not require disk I/O to handle.") \
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M(PerfPageFaultsMajor, "This counts the number of major page faults. These required disk I/O to handle.") \
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\
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M(CreatedHTTPConnections, "Total amount of created HTTP connections (closed or opened).") \
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\
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@ -159,15 +159,20 @@ static const PerfEventInfo raw_events_info[] = {
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HARDWARE_EVENT(PERF_COUNT_HW_STALLED_CYCLES_FRONTEND, PerfStalledCyclesFrontend),
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HARDWARE_EVENT(PERF_COUNT_HW_STALLED_CYCLES_BACKEND, PerfStalledCyclesBackend),
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HARDWARE_EVENT(PERF_COUNT_HW_REF_CPU_CYCLES, PerfRefCpuCycles),
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// `cpu-clock` is a bit broken according to this: https://stackoverflow.com/a/56967896
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SOFTWARE_EVENT(PERF_COUNT_SW_CPU_CLOCK, PerfCpuClock),
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SOFTWARE_EVENT(PERF_COUNT_SW_TASK_CLOCK, PerfTaskClock),
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SOFTWARE_EVENT(PERF_COUNT_SW_CONTEXT_SWITCHES, PerfContextSwitches),
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SOFTWARE_EVENT(PERF_COUNT_SW_CPU_MIGRATIONS, PerfCpuMigrations),
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SOFTWARE_EVENT(PERF_COUNT_SW_ALIGNMENT_FAULTS, PerfAlignmentFaults),
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SOFTWARE_EVENT(PERF_COUNT_SW_EMULATION_FAULTS, PerfEmulationFaults)
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SOFTWARE_EVENT(PERF_COUNT_SW_EMULATION_FAULTS, PerfEmulationFaults),
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SOFTWARE_EVENT(PERF_COUNT_SW_PAGE_FAULTS_MIN, PerfPageFaultsMinor),
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SOFTWARE_EVENT(PERF_COUNT_SW_PAGE_FAULTS_MAJ, PerfPageFaultsMajor)
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};
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static_assert(sizeof(raw_events_info) / sizeof(raw_events_info[0]) == NUMBER_OF_RAW_EVENTS);
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#undef HARDWARE_EVENT
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#undef SOFTWARE_EVENT
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@ -53,6 +53,8 @@ namespace ProfileEvents
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extern const Event PerfCpuMigrations;
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extern const Event PerfAlignmentFaults;
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extern const Event PerfEmulationFaults;
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extern const Event PerfPageFaultsMinor;
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extern const Event PerfPageFaultsMajor;
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#endif
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}
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@ -156,7 +158,7 @@ struct PerfEventValue
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UInt64 time_running = 0;
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};
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static constexpr size_t NUMBER_OF_RAW_EVENTS = 16;
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static constexpr size_t NUMBER_OF_RAW_EVENTS = 18;
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struct PerfDescriptorsHolder : boost::noncopyable
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{
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