Re: what is the recommended max ext4 partition size for a cyrus mailstore?
"lolcatz21 via Info" <[email protected]>
| Newsgroups | gmane.mail.imap.cyrus |
|---|---|
| Message-ID | <[email protected]> |
oh nice. i know ZFS is the future. the benefits of COW, b-trees, checksum data integrity, reed-soloman- raidZ, online scrubs, snapshots, etc are hard to ignore. and LZ4 is just icing on the cake. so a striped pool of 2x 12 wide Raid-Z2 with LZ4? -> brilliantly greedy! are you CPU or memory bound now? looks like you found a good config that balances cost, speed and reliability of NVMe. My install will be 12 spinners due to a shoestring budget. so I will probably be doing a striped pool of 6 mirror vdevs, trading out half the capacity for speed, and rolling the dice on slightly more or less redundancy. I also hear ARC needs a ton of memory when you tune ZFS for smaller record sizes like 16kb. something like 1% of your pool, and machines with a ton of ram are usually NUMA machines which appears to be a non starter for ZFS? I would love to hear more about your setup and ZFS experience.. what ARC and record size did you end up settling on? I imagine you are getting a pretty high compression ratio with lz4. ------------------------------------------ Cyrus: Info Permalink: https://cyrus.topicbox.com/groups/info/T860d16c25d61b629-M153312c79185f732791ac110 Delivery options: https://cyrus.topicbox.com/groups/info/subscription