2011/3/6 aaron morton <aaron@thelastpickle.com>
Your node is under memory pressure, after the GC there is still 5.7GB in use. In fact it looks like memory usage went up during the GC process.

Can you reduce the memtable size, caches or the number of CF's or increase the JVM size? Also is this happening under heavy load ?

I have memtable size, and insert data into one CF, with biggest rowsize 1K, how it is possible that after GC all memory is load? Meybe this is memory leak in cassandra 0.7.3?