Re: Improving write performance in Cassandra and a few related issues...

2013-12-19 Thread Aaron Morton
> Thanks for the reply. By packet drops I mean, the client is not able to read > the shared memory as fast as the software switch is writing into it.. > > What is the error you are getting on the client ? >Also, I would like to know if in general , distribution of write requests > to dif

Re: Improving write performance in Cassandra and a few related issues...

2013-12-17 Thread Krishna Chaitanya
Thanks for the reply. By packet drops I mean, the client is not able to read the shared memory as fast as the software switch is writing into it.. I doubt its the issue with the client but can you in particular issues that could cause this type of scenario? Also, I would like to know if i

Re: Improving write performance in Cassandra and a few related issues...

2013-12-17 Thread Aaron Morton
> rite throughput is remaining at around 460 pkts/sec or sometimes even falling > below that rate as against the expected rate of around 920 pkts/sec. Is it > some kind of limitation of Cassandra or am I doing something wrong??? There is nothing in cassandra that would make that happen. Double c

Improving write performance in Cassandra and a few related issues...

2013-12-14 Thread Krishna Chaitanya
Hello, I am a newbie to the Cassandra world and have a few doubts which I wanted to clarify. I am having a software switch that stores netflow packets into a shared memory segment and a daemon that reads that memory segment and stores them into a 2-node Cassandra cluster. Currently, I am sto