changeset 5283:9044964f9163

8024669: Native OOME when allocating after changes to maximum heap supporting Coops sizing on sparcv9 Summary: After changes in 8010722 the ergonomics for calculating the size of the heap that supports zero based compressed oops changed. This lead to the VM actually using zero based compressed oops. Due to low default HeapBaseMinAddress, the OS mapping in the application image at the same address, and limitations of the malloc implementation on Solaris this resulted in very little C heap available for the VM. So the VM immediately gives a native OOME when the machine has lots of physical memory (>=32G). The solution is to increase the HeapBaseMinAddress so that the VM has enough C heap. Reviewed-by: kvn, brutisso
author tschatzl
date Wed, 18 Sep 2013 13:18:52 +0200
parents 2f426063daea
children 719e886d4f72
files src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp
diffstat 1 files changed, 3 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Wed Sep 18 10:02:19 2013 +0200
+++ b/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Wed Sep 18 13:18:52 2013 +0200
@@ -35,7 +35,9 @@
 
 // Used on 64 bit platforms for UseCompressedOops base address
 #ifdef _LP64
-define_pd_global(uintx, HeapBaseMinAddress,      CONST64(4)*G);
+// use 6G as default base address because by default the OS maps the application
+// to 4G on Solaris-Sparc. This leaves at least 2G for the native heap.
+define_pd_global(uintx, HeapBaseMinAddress,      CONST64(6)*G);
 #else
 define_pd_global(uintx, HeapBaseMinAddress,      2*G);
 #endif