Re: Modern uses of CONFIG_XFS_RT

Dave Chinner
2020-02-20T03:41:15Z

On Wed, Feb 19, 2020 at 01:57:15PM +0000, Luis Chamberlain wrote:
> I hear some folks still use CONFIG_XFS_RT, I was curious what was the
> actual modern typical use case for it. I thought this was somewhat
> realted to DAX use but upon a quick code inspection I see direct
> realtionship.

Facebook use it in production systems to separate large file data
from metadata and small files. i.e. they use a small SSD based
partition for the filesytem metadata and a spinning disk for
the large scale data storage. Essentially simple teired storage.

It's also commonly still used in multi-stream DVRs (think
multi-camera security systems), and other similar sequential access
data applications...

That's just a couple off the top of my head...

Cheers,

Dave.
--
Dave Chinner
david@fromorbit.com