You can look at top command. There is column of memory
Regards, Nitan Cell: 510 449 9629 > On Apr 11, 2020, at 11:10 AM, HImanshu Sharma <himanshusharma0...@gmail.com> > wrote: > > > 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
