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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()

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In os::Linux::rebuild_cpu_to_node_map() fix the size of the CPU bitmap. Fixed arithmetic in MutableNUMASpace::adaptive_chunk_size() that could cause overflows and underflows of the chunk_size variable.

Reviewed-by: apetrusenko
This commit is contained in:
Igor Veresov 2008-12-03 14:18:57 -08:00
parent 16aa57cb4b
commit af509dd90d
7 changed files with 96 additions and 21 deletions
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3
hotspot/src/share/vm/runtime/globals.hpp
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@ -342,6 +342,9 @@ class CommandLineFlags {
product(bool, UseNUMA, false, \
"Use NUMA if available") \
\
product(bool, ForceNUMA, false, \
"Force NUMA optimizations on single-node/UMA systems") \
\
product(intx, NUMAChunkResizeWeight, 20, \
"Percentage (0-100) used to weight the current sample when " \
"computing exponentially decaying average for " \