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djdallmann / GamingPCSetup

A research and evidence based approach to optimizing your gaming PC, configuration and setup. Recommendations found in this guide are based on curated reputable technical references, and personal research.
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maybe you know this? #18

Closed tigros closed 7 months ago

tigros commented 10 months ago

Hi,

Did you ever notice that on Windows 7 certain file types are automatically set to critical I/O priority when reading them, like mp3, mp4 etc? I don't think it matters what application is doing the reading.

I would like this to happen on Windows 10/11, any ideas?

Also i'd like to add file types on windows 7 like .flac, how to do that?

An answer to this would be helpful to tons of ppl i'm sure! nobody likes listening to a broken record.

Thanks!

djdallmann commented 10 months ago

Can you share your methods or process regarding certain filetypes automatically use X I/O priority? Are you opening the audio files with specific software, which software, what version? What are you using to check, process hacker?

tigros commented 10 months ago

any software as long as it's reading .mp3, .mp4, .avi probably others, yes process hacker disk tab, filter on .mp3 etc.

i don't know of any special software i've installed that does this, but when i check the same in a virtual win 7 it doesn't happen, weird!

djdallmann commented 10 months ago

My first guess is Windows Multimedia Class Scheduler Service (MMCSS), here's a quick way to find out. Close your programs that's working on the audio files, go to services and disable the service. Then redo your test to see if IO priority is still being influence.

tigros commented 10 months ago

ok tried it, even rebooted for good measure, no change. it disables all audio anyway since it turns off "Windows Audio" service.

you can do a "copy big.mp3 bigcopy.mp3" and only the reading is in critical, bigcopy is Normal. so that proves it's not just a certain program.

really obscure, yet so useful!