From 87e293bee1c23d142e3f778e1baddb8b19e48c0c Mon Sep 17 00:00:00 2001 From: stack Date: Fri, 8 Aug 2014 11:10:24 -0700 Subject: [PATCH] Add note on where to find direct memory usage in jmx --- src/main/docbkx/book.xml | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/main/docbkx/book.xml b/src/main/docbkx/book.xml index d0c6bfa7eca..e00e4804e90 100644 --- a/src/main/docbkx/book.xml +++ b/src/main/docbkx/book.xml @@ -2282,7 +2282,11 @@ rs.close(); You can see how much memory -- onheap and offheap/direct -- a RegionServer is configured to use and how much it is using at any one time by looking at the - Server Metrics: Memory tab in the UI. + Server Metrics: Memory tab in the UI. + It can also be gotten via JMX. In particular the direct + memory currently used by the server can be found on the + java.nio.type=BufferPool,name=direct + bean. hbase.bucketcache.percentage.in.combinedcache