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Jan Lehnardt commented on COUCHDB-1342: --------------------------------------- I tried looking into this but make check fails with ./test/etap/242-replication-many-leaves.t .. 9/? Bailout called. Further testing stopped: Timeout waiting for replication to finish and it seems master got ahead again. > Asynchronous file writes > ------------------------ > > Key: COUCHDB-1342 > URL: https://issues.apache.org/jira/browse/COUCHDB-1342 > Project: CouchDB > Issue Type: Improvement > Components: Database Core > Reporter: Jan Lehnardt > Fix For: 1.3 > > Attachments: COUCHDB-1342.patch > > > This change updates the file module so that it can do > asynchronous writes. Basically it replies immediately > to process asking to write something to the file, with > the position where the chunks will be written to the > file, while a dedicated child process keeps collecting > chunks and write them to the file (and batching them > when possible). After issuing a series of write request > to the file module, the caller can call its 'flush' > function which will block the caller until all the > chunks it requested to write are effectively written > to the file. > This maximizes the IO subsystem, as for example, while > the updater is traversing and modifying the btrees and > doing CPU bound tasks, the writes are happening in > parallel. > Originally described at http://s.apache.org/TVu > Github Commit: > https://github.com/fdmanana/couchdb/commit/e82a673f119b82dddf674ac2e6233cd78c123554 -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira