[rhelv6-list] Kernel memory leak?

Chris Adams cmadams at hiwaay.net
Fri Jan 21 16:49:42 UTC 2011


Is anybody else seeing continually-increasing RAM use in RHEL 6?  I'm
running on x86_64, and it appears the kernel is steadily increasing its
RAM use.  If I compare process RAM usage to total used RAM, there is a
big discrepancy:

# ps aux | awk '{x+=$6}END{print x}'
319736
# free
             total       used       free     shared    buffers     cached
Mem:       2055296    1791096     264200          0     201512     626996
-/+ buffers/cache:     962588    1092708
Swap:      2621432         16    2621416

I looked at "slabtop", and the dentry cache is the culprit:

  OBJS ACTIVE  USE OBJ SIZE  SLABS OBJ/SLAB CACHE SIZE NAME
3078900 3078900 100%    0.19K 153945       20    615780K dentry

Anybody else seeing this?
-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.




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