ackshi

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2 lata temudiscuss

I'm a little surprised it seems they didn't have some existing compression solution before moving to zfs. With so much repetitive text across emails I would think there would be a LOT to gain, such as from dictionaries, compressing many emails into bigger blobs, and fine-tuning compression options.

ackshi

2 lata temudiscuss

Keeping enough free space should be much less of a problem with SSDs. They can tune it so the array needs to be 95% full before the slower best-fit allocator kicks in. https://openzfs.readthedocs.io/en/latest/performance-tuning....

I think that 80% figure is from when drives were much smaller and finding free space over that threshold with the first-fit allocator was harder.