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From hongphong1805 <phongpham1...@gmail.com>
Subject CPU usage on region servers
Date Thu, 12 Jan 2017 09:23:50 GMT
Hi all,
   I have 5 region servers and this is my config:

Hardware:
		2 physical machines -> 7 vitural machines
		Each vitural machine:
		CPU: 8cores
		RAM: 24GB
We are setup hadoop env with  hortonwork 2.5 and setup HBase with 5
RegionServer, 2 Hbase masters
Config:
  export HBASE_HEAPSIZE=8000
  export HBASE_REGIONSERVER_OPTS="$HBASE_REGIONSERVER_OPTS -Xms8G -Xmx8g"

When i excecute many queries on the same time, some regions has high CPU
usage (close 100%). So each query is very slow. 
Test case:
        + On single request: 3s
	+ On 5 requests on same times: (submit multi-requests from client):
20s/request
I would highly appreciate your help. 
Thanks



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