Re: {* 05.00 *}Re: Re: Desperate with 870 QVO and ZFS
Date: Thu, 07 Apr 2022 13:43:29 UTC
On 4/7/2022 7:25 AM, mike tancsa wrote: > On 4/7/2022 4:59 AM, egoitz@ramattack.net wrote: >> >> Hi Mike! >> >> Thanks a lot for your comment. I see. As said before, we didn't >> really enable compression because we just keep the config as FreeBSD >> leaves by default. Apart from that, having tons of disk space and >> well... for avoiding the load of compress/decompress... The main >> reason was it was not enabled by default really and not to have seen >> a real reason for it.... was not more than that....I appreciate your >> comments really :) > > > Think of the extreme case where you do something like > > dd if=/dev/zero of=/tank/junk.bin bs=1m count=10000 > > as this is a 20G file that takes just a few hundred bytes of write IO > on a compressed system. Obviously, as the compress ratio reduces in > the real world the benefits become less. Where that diminishing > return is, not sure. But something to keep in mind > > You might also want to have a look at this article which I found quite helpful https://klarasystems.com/articles/openzfs1-understanding-transparent-compression/ ---Mike