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8023905: Failing to initialize VM with small initial heap when NUMA and large pages are enabled

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Exit VM when fails to initialize small initial heap with NUMA and large pages enabled

Reviewed-by: jmasa, sjohanss
This commit is contained in:
Sangheon Kim 2017-03-07 10:25:58 -08:00
parent e44e774bbe
commit d86c76dca9
3 changed files with 117 additions and 2 deletions
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16
hotspot/src/share/vm/gc/parallel/mutableNUMASpace.cpp
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@ -30,11 +30,21 @@
#include "runtime/atomic.hpp"
#include "runtime/thread.inline.hpp"
MutableNUMASpace::MutableNUMASpace(size_t alignment) : MutableSpace(alignment) {
MutableNUMASpace::MutableNUMASpace(size_t alignment) : MutableSpace(alignment), _must_use_large_pages(false) {
_lgrp_spaces = new (ResourceObj::C_HEAP, mtGC) GrowableArray<LGRPSpace*>(0, true);
_page_size = os::vm_page_size();
_adaptation_cycles = 0;
_samples_count = 0;
#ifdef LINUX
// Changing the page size can lead to freeing of memory. When using large pages
// and the memory has been both reserved and committed, Linux does not support
// freeing parts of it.
if (UseLargePages && !os::can_commit_large_page_memory()) {
_must_use_large_pages = true;
}
#endif // LINUX
update_layout(true);
}
@ -578,6 +588,10 @@ void MutableNUMASpace::initialize(MemRegion mr,
// Try small pages if the chunk size is too small
if (base_space_size_pages / lgrp_spaces()->length() == 0
&& page_size() > (size_t)os::vm_page_size()) {
// Changing the page size below can lead to freeing of memory. So we fail initialization.
if (_must_use_large_pages) {
vm_exit_during_initialization("Failed initializing NUMA with large pages. Too small heap size");
}
set_page_size(os::vm_page_size());
rounded_bottom = (HeapWord*)round_to((intptr_t) bottom(), page_size());
rounded_end = (HeapWord*)round_down((intptr_t) end(), page_size());