I'm quite sure Windows uses ETW on various places: searching for etl files, I find 136 on my C: disk, and all are generated by the system, and not due to my deb

I'm quite sure Windows uses ETW on various places: searching for etl files, I find 136 on my C: disk, and all are generated by the system, and not due to my debugging actions. E.g. C:\ProgramData\Microsoft\Diagnosis\ETLLogs\AutoLogger\AutoLogger-Diagtrack-Listener.etl C:\Users\myname\AppData\Local\Microsoft\Windows\Explorer\ExplorerStartupLog.etl C:\Users\myname\AppData\Local\Microsoft\Windows\Explorer\ExplorerStartupLog_RunOnce.etl C:\Users\myname\AppData\Local\Microsoft\Windows\SkyDrive\logs\app\SkyDriveApp-2015-08-30.2157.4952-1.etl C:\Users\myname\AppData\Local\Packages\microsoft.windowscommunicationsapps_8wekyb3d8bbwe\LocalState\LiveComm.etl C:\Users\myname\AppData\Local\Packages\microsoft.windowscommunicationsapps_8wekyb3d8bbwe\LocalState\LiveCommLast.etl C:\Users\myname\AppData\Local\Packages\microsoft.windowscommunicationsapps_8wekyb3d8bbwe\LocalState\Microsoft.WindowsLive.Mail.etl C:\Users\myname\AppData\Local\Packages\microsoft.windowscommunicationsapps_8wekyb3d8bbwe\LocalState\Microsoft.WindowsLive.People.etl C:\Users\myname\AppData\Local\Packages\Microsoft.WindowsReadingList_8wekyb3d8bbwe\LocalState\StashApp.etl C:\Users\myname\AppData\Local\Packages\Microsoft.WindowsReadingList_8wekyb3d8bbwe\LocalState\StashShare.etl C:\Windows\Inf\netcfgx.4.etl C:\Windows\Logs\PBR\RjvTrace_Configure.etl C:\Windows\Logs\SystemRestore\restore.0.etl C:\Windows\System32\wdi\{86432a0b-3c7d-4ddf-a89c-172faa90485d}\{fef283f0-94cd-4a98-a8e7-4fd5e3eca941}\snapshot.etl C:\Windows\System32\wdi\LogFiles\BootCKCL.etl C:\Windows\System32\wdi\LogFiles\SecondaryLogonCKCL.etl C:\Windows\System32\wdi\LogFiles\ShutdownCKCL.etl C:\Windows\System32\wfp\wfpdiag.etl If we would track everything that their different telemetries uploads, I'm quite sure .etl files would be somewhere inside. Or that their number rises with the installation of the KB updates that mention telemetry (e.g. everything related to "prepare your system for Windows 10," for example). Or that they really planned to use .etl files too fro these purposes but just haven't yet. But the .etl are widely used, they are simply system-level provided effective logs. Everybody can check for himself too.