Re: Cassandra Multi DC (Active-Active) Setup - Measuring latency & throughput performance

2016-02-27 Thread chandrasekar.krc
centers. Thanks & Regards, Chandra Sekar KR From: Bryan Cheng <br...@blockcypher.com> Sent: Saturday, February 27, 2016 05:01 To: user@cassandra.apache.org Subject: Re: Cassandra Multi DC (Active-Active) Setup - Measuring latency & throughput performan

Re: Cassandra Multi DC (Active-Active) Setup - Measuring latency & throughput performance

2016-02-26 Thread Bryan Cheng
Hi Chandra, For write latency, etc. the tools are still largely the same set of tools you'd use for single-DC- stuff like tracing, cfhistograms, cassandra-stress come to mind. The exact results are going to differ based on your consistency tuning (can you get away with LOCAL_QUORUM vs QUORUM?)

Cassandra Multi DC (Active-Active) Setup - Measuring latency & throughput performance

2016-02-26 Thread chandrasekar.krc
Hi, Are there any links/resources which describe performance measurement (latency & throughput) for a Cassandra Multi DC Active-Active setup across a WAN network (20Gbps bandwidth) with 5 nodes in each DC. Basically, I would like to know how to measure latency of writes when data is