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this post was submitted on 26 May 2025
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I had to give up on stalwart because on 4gb ram dual core with mechanical HDD the performance for a single account domain was abysmal and after some support back and forth there was no solution.
On the same hardware the good old postfix+dovecot just handles perfectly with 90% spare capacity
Sorry guys, maybe it was time to optimize it a bit before adding more features?
That's probably because you were using RocksDB as a backend, which does not work well on mechanical HDDs. Try using PostgreSQL instead.
I did, we discussed this on an issue and a github discussion. It was still too slow and saturating my low spec machine, no matter which backends I tried to use.
Probably my hardware is just too underpowered.