Disable Filesystem Cache/File Direct write to Disk

Raja 6 Reputation points
2021-12-06T08:43:37.883+00:00

Hi All,

I am doing a testing inside disk(SSD FW) level. Whenever the files are copy/written from the windows it doesn't come to disk immediately, it cached the file write operation and written the disk as bulk. Eg: I am trying write 5000 files(each file 4K size), As file size is very small it cache all the files and dump 5000 files at one burst.

There are flag FILE_FLAG_NO_BUFFERING/FILE_FLAG_WRITE_THROUGH but this can only using CreateFile API's. I want this solution as generic file manager like even windows file copy must come to the disk directly.

I have disabled policy->Write-Caching Policy, It didn't solve my problem.

Network files system works in my expected behavior, Eg: configure windows share folder and copy files to the shared folder from network, in this case, All individual files are writing to the disk immediately.

Is there any configuration/patch to the files system manager can achieve immediately disk file write.

Kindly provide your valuable suggestion.

Best Regards,

Raja.

Sysinternals
Sysinternals
Advanced system utilities to manage, troubleshoot, and diagnose Windows and Linux systems and applications.
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