刘珍 created IOTDB-2918: ------------------------- Summary: [ wal_buffer_queue_capacity ] Default Settings Key: IOTDB-2918 URL: https://issues.apache.org/jira/browse/IOTDB-2918 Project: Apache IoTDB Issue Type: Improvement Components: Core/WAL Reporter: 刘珍 Assignee: Haiming Zhu Attachments: image-2022-04-14-17-01-03-201.png
master 9e1a508be4d335d9ccac6f90b7c568bc5c5fe182 问题描述: wal_buffer_queue_capacity现在的默认值是10000(这个参数应该在iotdb-engine.properties可见,目前不可见),私有云长测配置,async模式fsync_wal_delay_in_ms=10,会有很多system rejected(failOperation=942,总operation是5,314,940),wal_buffer_queue_capacity为1000,system rejected减少,failOperation=5,但是对async 普通序列的写入性能影响大,比10000慢约1倍。 这个参数的默认值,需要重新考虑。 !image-2022-04-14-17-01-03-201.png! -- This message was sent by Atlassian Jira (v8.20.1#820001)