Hi But I see memory not decreasing even if there is no traffic on cluster. How can I find actual memory usage by Cassandra process. If it is OS page cache then how to find how much is page cache and how much is used by process?
Thanks Himanshu On Sat, Apr 11, 2020 at 9:07 PM Laxmikant Upadhyay <laxmikant....@gmail.com> wrote: > It is OS page cache used during read..your os will leverage memory if not > being used by any other applications and it improves your read performance. > > On Sat, Apr 11, 2020, 12:47 PM HImanshu Sharma < > himanshusharma0...@gmail.com> wrote: > >> Hi >> >> I am very new to the use of cassandra. In a cassandra cluster of 3 nodes, >> I am observing memory usage of cassandra process going more than the heap >> memor allocated. As I understand, cassandra allocates off heap memory for >> bloom filters, index summary etc. >> >> When I run nodetool info, I see off heap memory usage around 1.5G, my >> heap is 8G. So memory usage should not go above 10G. But in running node >> it goes as high as 18G with heavy loads. It comes down with different loads >> but always more than 12G. >> >> I would like to know why memory usage is high and is there way to control >> it. >> >> Thanks >> Himanshu Sharma >> >
