*** old/hotspot/src/share/vm/runtime/globals.hpp	Mon Aug 28 10:31:32 2017
--- new/hotspot/src/share/vm/runtime/globals.hpp	Mon Aug 28 10:31:31 2017

*** 2038,2068 ****
--- 2038,2084 ----
            "Real memory size (in bytes) used to set maximum heap size")      \
            range(0, 0XFFFFFFFFFFFFFFFF)                                      \
                                                                              \
    product(size_t, ErgoHeapSizeLimit, 0,                                     \
            "Maximum ergonomically set heap size (in bytes); zero means use " \
!           "MaxRAM / MaxRAMFraction")                                        \
!           "MaxRAM * MaxRAMPercentage / 100")                                \
            range(0, max_uintx)                                               \
                                                                              \
    experimental(bool, UseCGroupMemoryLimitForHeap, false,                    \
            "Use CGroup memory limit as physical memory limit for heap "      \
            "sizing")                                                         \
                                                                              \
    product(uintx, MaxRAMFraction, 4,                                         \
            "Maximum fraction (1/n) of real memory used for maximum heap "    \
!           "size")                                                           \
!           "size. "                                                          \
+           "Deprecated, use MaxRAMPercentage instead")                       \
            range(1, max_uintx)                                               \
                                                                              \
    product(uintx, MinRAMFraction, 2,                                         \
            "Minimum fraction (1/n) of real memory used for maximum heap "    \
!           "size on systems with small physical memory size")                \
!           "size on systems with small physical memory size. "               \
+           "Deprecated, use MinRAMPercentage instead")                       \
            range(1, max_uintx)                                               \
                                                                              \
    product(uintx, InitialRAMFraction, 64,                                    \
!           "Fraction (1/n) of real memory used for initial heap size")       \
!           "Fraction (1/n) of real memory used for initial heap size. "      \
+           "Deprecated, use InitialRAMPercentage instead")                   \
            range(1, max_uintx)                                               \
                                                                              \
+   product(double, MaxRAMPercentage, 25.0,                                   \
+           "Maximum percentage of real memory used for maximum heap size")   \
+           range(0.0, 100.0)                                                 \
+                                                                             \
+   product(double, MinRAMPercentage, 50.0,                                   \
+           "Minimum percentage of real memory used for maximum heap"         \
+           "size on systems with small physical memory size")                \
+           range(0.0, 100.0)                                                 \
+                                                                             \
+   product(double, InitialRAMPercentage, 1.5625,                             \
+           "Percentage of real memory used for initial heap size")           \
+           range(0.0, 100.0)                                                 \
+                                                                             \
    develop(uintx, MaxVirtMemFraction, 2,                                     \
            "Maximum fraction (1/n) of virtual memory used for ergonomically "\
            "determining maximum heap size")                                  \
                                                                              \
    product(bool, UseAdaptiveSizePolicy, true,                                \