You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@iotdb.apache.org by "刘珍 (Jira)" <ji...@apache.org> on 2022/12/19 08:10:00 UTC

[jira] [Created] (IOTDB-5237) [fast compaction] cross/seq/unseq parameters are set to the value "fast" , and the compaction performance is slow

刘珍 created IOTDB-5237:
-------------------------

             Summary: [fast compaction] cross/seq/unseq parameters are set to the value "fast" , and the compaction performance is slow
                 Key: IOTDB-5237
                 URL: https://issues.apache.org/jira/browse/IOTDB-5237
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: mpp-cluster
            Reporter: 刘珍
            Assignee: 周沛辰
         Attachments: image-2022-12-19-16-02-15-108.png, image-2022-12-19-16-03-00-384.png, image-2022-12-19-16-03-11-460.png, image-2022-12-19-16-03-26-674.png, image-2022-12-19-16-03-42-117.png

master_1215_831a45e
compaction_write_throughput_mb_per_sec=1048576 (相当于合并 不限流)
普通序列,使用模板,3个参数设置fast,比1/2个参数设置fast的
合并性能慢,且合出来的文件多,占用磁盘空间多。
 !image-2022-12-19-16-02-15-108.png! 
资源监控:
 !image-2022-12-19-16-03-00-384.png! 
 !image-2022-12-19-16-03-11-460.png! 
 !image-2022-12-19-16-03-26-674.png! 
 !image-2022-12-19-16-03-42-117.png! 

测试环境
1. 192.168.10.75  48CPU384GB HDD
IoTDB 关合并 ,加大时间分区间隔(不跨分区)
生成数据见配置1,2,3
串行运行BM,写入完成,cli执行flush。
2. 生成测试数据:IoTDB配置
ConfigNode配置
MAX_HEAP_SIZE="8G"
DataNode配置
MAX_HEAP_SIZE="192G"
MAX_DIRECT_MEMORY_SIZE="32G"
Common配置
time_partition_interval=60480000000
query_timeout_threshold=36000000
enable_seq_space_compaction=false
enable_unseq_space_compaction=false
 enable_cross_space_compaction=false
compaction_write_throughput_mb_per_sec=1048576

3. 数据与日志信息
数据备份 /data/mpp_test/m_1215_831a45e/data_template
顺序数据:2731 (267G)
乱序数据:5276   (511G)
序号1 /data/mpp_test/m_1215_831a45e_fast1
序号2 /data/mpp_test/m_1215_831a45e_fast2
序号3 /data/mpp_test/m_1215_831a45e_fast3
序号4 /data/mpp_test/m_1215_831a45e_comm




--
This message was sent by Atlassian Jira
(v8.20.10#820010)