ZFS Encryption Speed (Ubuntu 23.10)

▤ Summary

Once booted into installation media, I execute the script that creates RAM disk that hosts all data for six files. Since I am testing on the same hardware as for 23.04 and using essentially the same script, I expected similar results but I was slightly surprised to see both raw read and write speed has been reduced by more than 10%. If you dont have AES support and you need CCM, the news is not that good as that code path has gotten significantly worse. Unless youre stuck on an ancient CPU this is irrelevant I guess as you should never opt for CCM in the first place. To summarize, the native ZFS encryption is still live and kicking in Ubuntu 23.10 and might even provide some power usage advantages as compared to LUKS.

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