Hi, This may due to the Compaction. To verify the problem, change the compaction_strategy to NO_COMPACTION.
This is fixed in the 0.11.3 RC3[1]. you could try this version :) [1] https://dist.apache.org/repos/dist/dev/iotdb/0.11.3/rc3 Thanks, ————————————————— Jialin Qiao School of Software, Tsinghua University 乔嘉林 清华大学 软件学院 Trevor Hart <[email protected]> 于2021年4月9日周五 上午10:29写道： > Hi Team, > > I am still struggling with high CPU usage on V11.2. My CPU usage creeps up > after a few days and basically got to 100% today and was unusable. > > If I restart the iotDB server then its fine for a few days. This Linux > server has 2 cores and 4Gb RAM. The database is running 24x7. > > The data ingestion is typically small. Maybe a 500 points per minute. I > can never see any data ingestion backing up unless the CPU is over 90%. > > Questions; > > 1. Does anyone else see this behaviour? > 2. Are there any maintenance tasks I should call daily? Should I be > calling Flush daily? > 3. Should I reduce the WAL threshold? > 4. I am using compaction_strategy=LEVEL_COMPACTION > 5. And have set enable_unseq_compaction=false > > Is there anything else I can try or do I just need bigger hardware? > > > > > > Thanks > Trevor > > >
