You may be seeing steal from another tenant on the VM. This article has a good explanation: http://blog.scoutapp.com/articles/2013/07/25/understanding-cpu-steal-time-when-should-you-be-worried
In short, kill the instance and launch a new one. Depending on your latency requirements and operational ability to respond, you may want to consider paying for dedicated instances. On Wed, Feb 19, 2014 at 2:30 AM, Sourabh Agrawal <iitr.sour...@gmail.com>wrote: > Hi, > > I am running cassandra 2.0.3 cluster on 4 AWS nodes. memory arguments are > the following for each node : > -Xms8G -Xmx8G -Xmn800M > > I am experiencing consistent high loads on one of the nodes. Each node is > getting approximately equal number of writes. I tried to have a look at the > logs and seems like CMS GC is running every 1-2 seconds. > > Any pointers on how to debug this? > > -- > Sourabh Agrawal > Bangalore > +91 9945657973 > -- ----------------- Nate McCall Austin, TX @zznate Co-Founder & Sr. Technical Consultant Apache Cassandra Consulting http://www.thelastpickle.com
