Hi, Glad to see the feedback :D
The mail list does not support attachments, you could upload it and share a download link. 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11日周日 上午6:47写道： > 0.11.3 RC3 seems much happier so far. There was an initial spike in CPU > after I upgradef to 11.3 but it has now settled down. > > I will keep an eye on it over the next week - see attachment. > > Thanks > Trevor Hart > > ---- On Sat, 10 Apr 2021 15:45:36 +1200 * [email protected] <[email protected]> * > wrote ---- > > Thanks everyone for the replies, I have deployed 0.11.3 RC3. I will try > that before I try altering the level compaction. > > Thanks > Trevor Hart > > > > ---- On Fri, 09 Apr 2021 23:29:07 +1200 *Xiangdong Huang > <[email protected] <[email protected]>>* wrote ---- > > And remember to set the strategy back after diagnosis... > > ----------------------------------- > Xiangdong Huang > School of Software, Tsinghua University > > 黄向东 > 清华大学 软件学院 > > > Jialin Qiao <[email protected]> 于2021年4月9日周五 下午7:24写道： > > > 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 > >> > >> > >> > > > > >
