w3ll1ngt commented on code in PR #13741: URL: https://github.com/apache/ignite/pull/13741#discussion_r4443473597
########## docs/_docs/persistence/persistence-tuning.adoc: ########## @@ -63,6 +63,9 @@ tab:C++[unsupported] Consider using separate drives for data files and link:persistence/native-persistence#write-ahead-log[Write-Ahead-Logging (WAL)]. Ignite actively writes to both the data and WAL files. +Keeping the active WAL on its own device reduces the competition between checkpoint page writes and WAL writes, which helps keep write latency stable while a checkpoint is in progress. +The durability guarantees differ by WAL mode: with the default `LOG_ONLY` mode the WAL is flushed to the operating system cache rather than forced to disk on every commit, while `FSYNC` waits for the disk. +See link:server-node-file-system-layout[Server Node File System Layout] for the complete placement of data, WAL, the WAL archive, CDC, snapshots, logs, and diagnostic files. Review Comment: shortened, thx -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
