On Wed, Jul 08, 2020 at 11:08:53AM -0600, Chris Murphy wrote:
I expect beefy CPU systems, including gaming systems, to have the
same
or better read/write performance using mount option compress=zstd:1.
Where I've seen equal or better read performance, there can be a write
performance drop if the IO storage has been upgraded. Sample size 1,
and the workload was kernel compiling.
Yeah I guess for /usr the most relevant write metric is "does it slow down
DNF upgrades or install operations enough to be noticeable / annoying /
problematic"?
SD Card and eMMC it's a win for sure. Also an argument could be
made
do use Btrfs+compression on USB sticks. This class of flash will just
return garbage if they encounter uncorrectable errors - rather than a
discrete read error. In this case, Btrfs refuses to hand over the
corrupt data, in normal operation. A good question is, whether the
desktop should warn that the file is corrupt, and then permit a
degraded read somehow to still get the file off the media. It might
imply necessary desktop integration.
A related question: Are we planning on using btrfs on live media?
--
Matthew Miller
<mattdm(a)fedoraproject.org>
Fedora Project Leader