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Posted to notifications@iotdb.apache.org by "刘珍 (Jira)" <ji...@apache.org> on 2022/04/23 11:10:00 UTC

[jira] [Commented] (IOTDB-2980) [ aligned timeseries performance ] High CPU usage & Low write performance

    [ https://issues.apache.org/jira/browse/IOTDB-2980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17526825#comment-17526825 ] 

刘珍 commented on IOTDB-2980:
---------------------------

关合并：
还是对齐序列慢，且cpu使用率高。
对齐throughput(point/s)：17987638.87
普通throughput(point/s)：19175089.63

 !screenshot-1.png! 

> [ aligned timeseries performance ] High CPU usage & Low write performance
> -------------------------------------------------------------------------
>
>                 Key: IOTDB-2980
>                 URL: https://issues.apache.org/jira/browse/IOTDB-2980
>             Project: Apache IoTDB
>          Issue Type: Bug
>          Components: Core/Server
>    Affects Versions: 0.14.0-SNAPSHOT
>            Reporter: 刘珍
>            Assignee: Haonan Hou
>            Priority: Major
>         Attachments: aligned.properties, general.properties, image-2022-04-22-15-12-11-013.png, screenshot-1.png
>
>
> master_0421_8db8876
> 问题描述：
> 在8C32G（fit机器）相同的客户端配置，
> 对齐throughput(point/s) = 17358854.98，
> 普通序列throughput(point/s)=18952049.86
> 对齐慢约9%，且cpu使用率高。
>  !image-2022-04-22-15-12-11-013.png! 
> 测试步骤：
> 1. 机器信息
> iotdb 192.168.130.1   /data1/master_0421_8db8876
> bm 192.168.130.2 /data1/benchmark_v13
> 2. 参数配置
> iotdb
> MAX_HEAP_SIZE="20G"
> MAX_DIRECT_MEMORY_SIZE="6G"
> wal_dirs=/data2/wal,/data3/wal
> benchmark参数配置见附件
> 3. 启动测试
> 监控机器资源，记录测试结果，对比。



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