The DiskAccessMode is set to auto.
I am going to try with standard and see, but i am concerned how much that
would affect performance negatively.
thx
Amit
On Wed, Jul 21, 2010 at 3:59 PM, Aaron Morton wrote:
> Are you using mmap or auto DiskAccessMode ?
>
> There is a known issue with memory map
> We are seeing cassandra using very high virtual memory. One server in the
> cluster shows 90GB and the other shows about 70GB of committed virtual
> memory.
> The real memory used is less than 1GB. The Xmx is 4GB. The physical memory
> on the machine is 32GB and the swap space on the machine is a
Are you using mmap or auto DiskAccessMode ?There is a known issue with memory mapped file access taking up a lot of memory. See CASSANDRA-1214 https://issues.apache.org/jira/browse/CASSANDRA-1214 there is also some discussion in the mail list here. Try setting the DiskAccessMode to standardAaronOn
We are seeing cassandra using very high virtual memory. One server in the
cluster shows 90GB and the other shows about 70GB of committed virtual
memory.
The real memory used is less than 1GB. The Xmx is 4GB. The physical memory
on the machine is 32GB and the swap space on the machine is around 20GB
