Growing resident memory usage (RSS) of Java Process

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I ran in to the same problem. This is a known problem with glibc >= 2.10

The cure is to set this env variable

export MALLOC_ARENA_MAX=4

IBM article about setting MALLOC_ARENA_MAX
https://www.ibm.com/developerworks/community/blogs/kevgrig/entry/linux_glibc_2_10_rhel_6_malloc_may_show_excessive_virtual_memory_usage?lang=en

Google for MALLOC_ARENA_MAX or search for it on SO to find a lot of references.

You might want to tune also other malloc options to optimize for low fragmentation of allocated memory:

# tune glibc memory allocation, optimize for low fragmentation
# limit the number of arenas
export MALLOC_ARENA_MAX=2
# disable dynamic mmap threshold, see M_MMAP_THRESHOLD in "man mallopt"
export MALLOC_MMAP_THRESHOLD_=131072
export MALLOC_TRIM_THRESHOLD_=131072
export MALLOC_TOP_PAD_=131072
export MALLOC_MMAP_MAX_=65536

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