--- jdk9/make/autoconf/boot-jdk.m4	2017-01-23 20:49:50.000000000 +0100
+++ jdk9/make/autoconf/boot-jdk.m4	2017-02-02 07:37:15.384455529 +0100
@@ -360,11 +360,11 @@
   AC_MSG_CHECKING([flags for boot jdk java command for big workloads])
 
   # Starting amount of heap memory.
-  ADD_JVM_ARG_IF_OK([-Xms64M],boot_jdk_jvmargs_big,[$JAVA])
-  BOOTCYCLE_JVM_ARGS_BIG=-Xms64M
+  ADD_JVM_ARG_IF_OK([-Xms256M],boot_jdk_jvmargs_big,[$JAVA])
+  BOOTCYCLE_JVM_ARGS_BIG=-Xms256M
 
   # Maximum amount of heap memory and stack size.
-  JVM_HEAP_LIMIT_32="1024"
+  JVM_HEAP_LIMIT_32="768"
   # Running a 64 bit JVM allows for and requires a bigger heap
   JVM_HEAP_LIMIT_64="1600"
   STACK_SIZE_32=768
@@ -417,8 +417,8 @@
 
   # Use serial gc for small short lived tools if possible
   ADD_JVM_ARG_IF_OK([-XX:+UseSerialGC],boot_jdk_jvmargs_small,[$JAVA])
-  ADD_JVM_ARG_IF_OK([-Xms32M],boot_jdk_jvmargs_small,[$JAVA])
-  ADD_JVM_ARG_IF_OK([-Xmx512M],boot_jdk_jvmargs_small,[$JAVA])
+  ADD_JVM_ARG_IF_OK([-Xms256M],boot_jdk_jvmargs_small,[$JAVA])
+  ADD_JVM_ARG_IF_OK([-Xmx768M],boot_jdk_jvmargs_small,[$JAVA])
   ADD_JVM_ARG_IF_OK([-XX:TieredStopAtLevel=1],boot_jdk_jvmargs_small,[$JAVA])
 
   AC_MSG_RESULT([$boot_jdk_jvmargs_small])