Tuning malloc performance for multithread applications in rhel6 and rhel7

Solution Unverified - Updated -


  • Multithread application consumes too much cpu in malloc and free.
  • Contention in malloc and free with large a number or threads.
  • The system uses too much time in _int_free and _int_malloc.
  • The kernel is most time in _raw_spin_lock.


  • Red Hat Enterprise Linux (RHEL) 6
  • Red Hat Enterprise Linux (RHEL) 7

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