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Looking for a video on quicksync performance impact of iGPU passthrough (self.selfhosted)

submitted 1 year ago by TheHobbyist to c/[email protected]

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Hi folks, I'm looking for a specific YouTube video which I watched around 5 months ago.

The gist of the video is that it was comparing the transcoding performance of an Intel iGPU when used natively, compared to when passed through to a VM. From what I recall there was a significant performance hit and it was around 50% or so (in terms of fps transcoding). I believe the test was performed on jellyfin. I don't remember whether it was using xcpng, proxmox or another OS. I don't remember which channel published this video nor when it was published, just that I watched it sometime between April and June this year.

Anyone recall or know what video I'm talking about? Possible keywords include: quicksync, passthrough, sriov, iommu, transcoding, iGPU, encoding.

Thank you in advance!

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[–] [email protected] 4 points 1 year ago (1 children)

The performance impact is if you're doing vt-d or some device mapping like that. Ive not noticed any performance loss when passing through the entire igpu.

[–] TheHobbyist 2 points 1 year ago

Thank you, I'll see if this new information can help me pinpoint the video.