Re: cassandra massive write perfomance problem

2011-07-21 Thread aaron morton
background http://wiki.apache.org/cassandra/FAQ#slows_down_after_lotso_inserts Without more info my initial guess is some GC pressure and/or IO pressure from compaction. Check the logs for messages from the GCInspector or connect JConsole to the instance and take a look at the heap. Here is some

cassandra massive write perfomance problem

2011-07-21 Thread lebron james
Please help me solve one problem I have server with 4 GB RAM and 2x 4 cores CPU When i start do massive writes in cassandra all works fine. but after couple hours with 10K inserts per second database grows up to 25+ GB performance go down to 500 insert per seconds I find out this because compacting