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diff src/share/vm/runtime/globals.hpp @ 3854:1af104d6cf99

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7079329: Adjust allocation prefetching for T4 Summary: on T4 2 BIS instructions should be issued to prefetch 64 bytes Reviewed-by: iveresov, phh, twisti
author kvn
date Tue, 16 Aug 2011 16:59:46 -0700
parents 3d42f82cd811
children 3cd0157e1d4d baf763f388e6
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--- a/src/share/vm/runtime/globals.hpp	Tue Aug 16 11:53:57 2011 -0700
+++ b/src/share/vm/runtime/globals.hpp	Tue Aug 16 16:59:46 2011 -0700
@@ -2897,8 +2897,11 @@
   product(intx,  AllocatePrefetchDistance, -1,                              \
           "Distance to prefetch ahead of allocation pointer")               \
                                                                             \
-  product(intx,  AllocatePrefetchLines, 1,                                  \
-          "Number of lines to prefetch ahead of allocation pointer")        \
+  product(intx,  AllocatePrefetchLines, 3,                                  \
+          "Number of lines to prefetch ahead of array allocation pointer")  \
+                                                                            \
+  product(intx,  AllocateInstancePrefetchLines, 1,                          \
+          "Number of lines to prefetch ahead of instance allocation pointer") \
                                                                             \
   product(intx,  AllocatePrefetchStepSize, 16,                              \
           "Step size in bytes of sequential prefetch instructions")         \