Quoting Rick Romero <r...@havokmon.com>:
Quoting Robert L Mathews <li...@tigertech.com>:
On 3/15/16 10:13 AM, Sven Hartge wrote:
I don't have a script, but I can provide some numbers. I did a test
with
a server for about 10.000 users and 2TB worth of mail, converting from
Maildir++ to mdbox with zlib (level = 6) and had a final size of 1TB,
so
2:1 reduction.
These numbers roughly match my results. About 6 TB of mail compresses
down to about 3 TB.
Also keep in mind that even if it does increase CPU usage, it reduces
disk usage. This is probably an excellent tradeoff for most people,
since most servers are limited by disk throughput/latency more than CPU
power.
Just thought I'd add, because it frustrated me and it's an amusing
anecdote
to this - The new 4k ashift doubled my disk usage of Maildir++ mail.
So logically, if you're migrating from maildir++ to mdbox on 4k sector
system, you may see a sizable decrease in disk usage without a
compression
change.
Rick
With ZFS - Sorry - I dropped that in my edit.
