Mercurial > hg > graal-jvmci-8
diff src/share/vm/runtime/virtualspace.cpp @ 22976:5788dbd1f2d6
8066875: VirtualSpace does not use large pages
Reviewed-by: stefank, tschatzl, anoll, thartmann
author | ehelin |
---|---|
date | Fri, 16 Jan 2015 10:29:12 +0100 |
parents | c2ce24504334 |
children | 33e421924c67 |
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--- a/src/share/vm/runtime/virtualspace.cpp Wed Nov 26 10:32:21 2014 -0800 +++ b/src/share/vm/runtime/virtualspace.cpp Fri Jan 16 10:29:12 2015 +0100 @@ -53,7 +53,8 @@ } ReservedSpace::ReservedSpace(size_t size) { - size_t page_size = os::page_size_for_region(size, 1); + // Want to use large pages where possible and pad with small pages. + size_t page_size = os::page_size_for_region_unaligned(size, 1); bool large_pages = page_size != (size_t)os::vm_page_size(); // Don't force the alignment to be large page aligned, // since that will waste memory. @@ -372,7 +373,7 @@ bool VirtualSpace::initialize(ReservedSpace rs, size_t committed_size) { - const size_t max_commit_granularity = os::page_size_for_region(rs.size(), 1); + const size_t max_commit_granularity = os::page_size_for_region_unaligned(rs.size(), 1); return initialize_with_granularity(rs, committed_size, max_commit_granularity); } @@ -995,7 +996,7 @@ case Disable: return vs.initialize_with_granularity(rs, 0, os::vm_page_size()); case Commit: - return vs.initialize_with_granularity(rs, 0, os::page_size_for_region(rs.size(), 1)); + return vs.initialize_with_granularity(rs, 0, os::page_size_for_region_unaligned(rs.size(), 1)); } }