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runzhiwang updated HDDS-3283: ----------------------------- Attachment: (was: screenshot-1.png) > Improve write efficiency by decreasing the number of force sync to disk > ----------------------------------------------------------------------- > > Key: HDDS-3283 > URL: https://issues.apache.org/jira/browse/HDDS-3283 > Project: Hadoop Distributed Data Store > Issue Type: Improvement > Reporter: runzhiwang > Assignee: runzhiwang > Priority: Major > > The whole write cost about 140ms, about 110ms was cost by force sync to disk. > The force sync operations are as follows. I will try to avoid force sync the > response of CreateKey. > *RocksDB* > 1. When create key, the response was put into > [omDoubleBufferHelper|https://github.com/apache/hadoop-ozone/blob/master/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyCreateRequest.java#L264], > and sync to disk by > [writeOptions.setSync(true)|https://github.com/apache/hadoop-ozone/blob/master/hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/utils/db/DBStoreBuilder.java#L171] > 2. When commit key, the response was put into > [omDoubleBufferHelper|https://github.com/apache/hadoop-ozone/blob/master/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyCommitRequest.java#L222], > and sync to disk by > [writeOptions.setSync(true)|https://github.com/apache/hadoop-ozone/blob/master/hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/utils/db/DBStoreBuilder.java#L171] > *Ratis* > 1. leader and follower [sync > |https://github.com/apache/incubator-ratis/blob/master/ratis-server/src/main/java/org/apache/ratis/server/raftlog/segmented/BufferedWriteChannel.java#L86] > raftlog to disk -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: ozone-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: ozone-issues-h...@hadoop.apache.org