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WMI Libraly > Win32_PerfFormattedData_usbhub_USB Class

Win32_PerfFormattedData_usbhub_USB Class

USB I/O Counters
Namespace value is root/CIMV2.
WMI Provider value is WmiPerfInst.


  • AvgBytesPerTransfer
  • Displays the average size of all transfer URBs. For device instances only.

  • AvgmslatencyforISOtransfers
  • Avg number of ms between the current frame and the start frame of an ISO transfer when scheduled. For device instances only.

  • BulkBytesPerSec
  • Displays the current bulk transfer rate in bytes/sec.

  • Caption
  • A short textual description (one-line string) for the statistic or metric.

  • ControlDataBytesPerSec
  • Displays the current control transfer rate in bytes/sec.

  • ControllerPCIInterruptsPerSec
  • Displays the rate of PCI interrupt generation by the USB controller. For controller instances only.

  • ControllerWorkSignalsPerSec
  • Displays the current rate Work Signals generated per second by the usbport driver. For controller instances only.

  • Description
  • A textual description of the statistic or metric.

  • Frequency_Object
  • Not applicable.

  • Frequency_PerfTime
  • Not applicable.

  • Frequency_Sys100NS
  • Not applicable.

  • HostControllerAsyncCacheFlushCount
  • Incremented each time the controller async cache is flushed.

  • HostControllerAsyncIdle
  • Non-Zero value if the host controller async schedule is not running(idle).

  • HostControllerIdle
  • Non-zero value if the host controller is not running(idle).

  • HostControllerPeriodicCacheFlushCount
  • Incremented each time the controller periodic cache is flushed.

  • HostControllerPeriodicIdle
  • Non-Zero if the periodic schedule is not running(idle).

  • InterruptBytesPerSec
  • Displays the current interrupt transfer rate in bytes/sec.

  • IsochronousBytesPerSec
  • Displays the current isochronous transfer rate in bytes/sec.

  • IsoPacketErrorsPerSec
  • Number of ISO packets that are NOT late, but complete with an error. For device instances only.

  • Name
  • The Name property defines the label by which the statistic or metric is known. When subclassed, the property can be overridden to be a Key property.

  • PercentTotalBandwidthUsedforInterrupt
  • Displays the percentage of BW reserved for interrupt transfers

  • PercentTotalBandwidthUsedforIso
  • Displays the percentage of BW reserved for ISO transfers

  • Timestamp_Object
  • Not applicable.

  • Timestamp_PerfTime
  • Not applicable.

  • Timestamp_Sys100NS
  • Not applicable.

  • TransferErrorsPerSec
  • Number of Transfer URBs completing with an error status. For device instances only.


    Method not found.

    Example WQL

    SELECT * FROM Win32_PerfFormattedData_usbhub_USB
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