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Shredding my SSDs (NVMe) under linux?
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How so? I've been running LUKS on modern NVMEs for years and there is just the same maybe at worst 10% hit in write/read speeds.
That's also my experience. There isn't really any noticeable performance hit, even on modern SSDs. It should be the same amount of data coming from the SSD anyway, since the SSD isn't even the part doing the cryptography (with LUKS), so it shouldn't have any effect. And the CPU handles the decryption just fine