--- old/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp 2016-11-16 16:45:39.490931000 +0100 +++ new/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp 2016-11-16 16:45:39.323920000 +0100 @@ -732,8 +732,10 @@ /////////////////////////////////////////////////////////////////////////////// // thread stack -size_t os::Posix::_compiler_thread_min_stack_allowed = 128 * K; -size_t os::Posix::_java_thread_min_stack_allowed = 128 * K; +// These sizes exclude OS stack guard pages, but include +// the VM guard pages. +size_t os::Posix::_compiler_thread_min_stack_allowed = 32 * K; +size_t os::Posix::_java_thread_min_stack_allowed = 32 * K; size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K; // return default stack size for thr_type @@ -746,7 +748,7 @@ size_t os::Linux::default_guard_size(os::ThreadType thr_type) { // Creating guard page is very expensive. Java thread has HotSpot // guard page, only enable glibc guard page for non-Java threads. - return (thr_type == java_thread ? 0 : page_size()); + return ((thr_type == java_thread || thr_type == os::compiler_thread) ? 0 : page_size()); } #ifndef PRODUCT