!ks.allstreams

The !ks.allstreams extension walks the entire device tree and finds every kernel streaming device in the system.

Syntax

!ks.allstreams [Flags] [Level] 

Parameters

Flags

Optional. Specifies the kind of information to be displayed. Flags can be any combination of the following bits. The default value is 0x1:

Bit 0 (0x1)

Causes the display to include streams.

Bit 2 (0x4)

Causes the display to include proxy instances.

Bit 3 (0x8)

Causes the display to include queued IRPs.

Bit 4 (0x10)

Causes the display to include an unformatted display of all streams.

Bit 5 (0x20)

Causes the display to include an unformatted display of all stream formats.

Level

Optional. Specifies the level of detail to display on a 0-7 scale with progressively more information displayed for higher values. To display all available details, supply a value of 7.

DLL

Comments

This command can take some time to execute (a minute is not unusual).

Here is an example of the !ks.allstreams display:

kd> !allstreams
6 Kernel Streaming FDOs found:
    Functional Device 82a17690 [\Driver\smwdm]
    Functional Device 8296eb08 [\Driver\wdmaud]
    Functional Device 82490388 [\Driver\sysaudio]
    Functional Device 82970cb8 [\Driver\MSPQM]
    Functional Device 824661b8 [\Driver\MSPCLOCK]
    Functional Device 8241c020 [\Driver\avssamp]

Additional Information

For more information, see Kernel Streaming Debugging.