4 ms·
This is commonly avoided by not putting memory pressure on your O_DIRECT application, which is probably an RDBMS on a dedicated single-purpose host. Not saying
by ericbarrett 3y ago
This is commonly avoided by not putting memory pressure on your O_DIRECT application, which is probably an RDBMS on a dedicated single-purpose host.
Not saying more work in the space wouldn't be welcome and interesting, just that it's generally the assumption whenever I've seen O_DIRECT (since the Solaris days and through today) that what's using it is the only thing of substance on the box.
- vlovich123 3y agoI think that’s a flawed assumption. Databases show up in many spots besides dedicated RDBMS (eg SQLite and RocksDB power all sorts of things and likely coexist with compute nodes because even compute nodes can need some amount of local storage).