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Why do I get the error: “Gave up waiting for prefetcher after 300 seconds” when I do a reboot trace on Windows 10 (TH2) on an SSD Drive?

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I am trying to measure reboot performance using Windows Performance Toolkit (WPT). The systems I am facing an error on have Windows 10 Threshold 2 on an SSD Drive.

The command I use is:

xbootmgr -trace rebootCycle -noPrepReboot -postBootDelay 60

The error is as follows: After the reboot the system waits for 60 seconds and then for the next 300 seconds I see "Waiting for prefetcher" on the screen. Then I get an error saying

"Gave up waiting for virtual prefetcher after 300 seconds. Could not wait for prefetcher."

I DO NOT see this error with the same version of the OS installed on a rotational drive (HDD) but only see it on SSD. I also ran the same command on an earlier version of the OS (Windows 10 RTM 240) and DID NOT face any issue.

I compared the following registry keys as well but there was no difference in the values for the keys: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SysMain

What is causing this error to occur specifically on SSD with Windows 10 TH2 but not on the other mentioned systems?



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