Re: write amplification, was: very slow "btrfs dev delete" 3x6Tb, 7Tb of data

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On 1/7/20 7:44 PM, Chris Murphy wrote:
Egads! Soo... total tangent. I'll change the subject.

Time for science!

"Analyzing IO Amplification in Linux File Systems"
https://arxiv.org/abs/1707.08514

Ironically Btrfs does better in a related paper:

"Filesystem Aging: It’s more Usage than Fullness"
https://www.usenix.org/conference/hotstorage19/presentation/conway

enjoy,
Holger



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