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@xxxxxxxxxxxxx
