Thank for your response. Can we reduce that value? Memory is used just 600M but the process occupy 3.2G. Too waste.
On Mon, Jul 18, 2011 at 6:53 PM, Jonathan Ellis <jbel...@gmail.com> wrote: > That means that the mmaped files are indeed resident at the moment. > > On Mon, Jul 18, 2011 at 1:51 AM, JKnight JKnight <beukni...@gmail.com> > wrote: > > Thank for your response. > > Do you talk about virtual memory (column VIRT show in top command)? > > But I mention about column RES. In my case, VIRT is 61.8G, RES is 3.2G > and > > SHR is 1.2G. > > JMX show Memory Usage: > > Used : 600MB, Commit 2.1G, Max: 2.1G > > On Mon, Jul 18, 2011 at 11:59 AM, Jonathan Ellis <jbel...@gmail.com> > wrote: > >> > >> http://wiki.apache.org/cassandra/FAQ#mmap > >> > >> On Sun, Jul 17, 2011 at 11:54 PM, JKnight JKnight <beukni...@gmail.com> > >> wrote: > >> > Dear all, > >> > I use JMX to monitor Cassandra server. > >> > Heap Memory Usage show: > >> > Used : 600MB, Commit 2.1G, Max: 2.1G > >> > But htop show Cassandra process consume 3.1G. > >> > Could you tell me why Cassandra occupy memory very large than in used? > >> > Thank a lot for support. > >> > -- > >> > Best regards, > >> > JKnight > >> > > >> > >> > >> > >> -- > >> Jonathan Ellis > >> Project Chair, Apache Cassandra > >> co-founder of DataStax, the source for professional Cassandra support > >> http://www.datastax.com > > > > > > > > -- > > Best regards, > > JKnight > > > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of DataStax, the source for professional Cassandra support > http://www.datastax.com > -- Best regards, JKnight
