postgres.git / summary / log / commit / refs

commit    ebd33f27ab023ef0e72ba162f2974ec49d96e8e3
Author:   Bruce Momjian <bruce@momjian.us>
Date:     Mon Oct 13 21:23:36 2014 +0000

    doc:  mention more changes needed to use huge pages
    
    Report by Laurence Parry


 doc/src/sgml/runtime.sgml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index 639b288e062..026850a1cf5 100644
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -1360,6 +1360,13 @@ $ <userinput>sysctl -w vm.nr_hugepages=3170</userinput>
     this setting through reboots.
    </para>
 
+   <para>
+    It is also necessary to give the database server operating system
+    user permission to use huge pages by setting
+    <varname>vm.hugetlb_shm_group</> via <application>sysctl</>, and
+    permission to lock memory with <command>ulimit -l</>.
+   </para>
+
    <para>
     The default behavior for huge pages in
     <productname>PostgreSQL</productname> is to use them when possible and


[parent: fe65280fea7e]