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Cassandra Performance Tuning

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I have successfully installed a multi-node Cassandra cluster with 10nodes, The nodetool status command shows every node is UP and NORMAL.

but the Performance I am getting is very bad.

here are my results:

Operations /seconds = 4000
Read Latency = 13ms
write Latency = 10ms

I am using YCSB to measure performance

Tuning that I have done till now:

Consistency level = 1
Replication Factor = 3
Heap size = 4GB

My Hardware: Each node is a VM with CentOS

2GHZ CPU with 8 cores
8GB RAM
1GB/ps N/W

Please let me know what more settings I can tweak to get maximum performance out of my cluster.


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