Adding netdev for a bigger audience.
On Tuesday, February 26, 2013 6:18:48 PM, Prashant Batra wrote:
Hi All,
I have created few memory cache areas using "kmem_cache_create" and
using it to allocate some memory.
What I observe after some cache_alloc's and cache_free's is that
/proc/slabinfo entries for my objects are good, meaning the number of
objects go back to 0 after they are freed.
But linux "free" command shows that some of the objects are cached and
that keeps on increasing. I am not able to understand this behavior.
Is it that kernel keeps the cache objects even after they are freed?
#cat /proc/slabinfo
my_cache 200 200 4096 1 1 : tunables 24 12 8
: slabdata 200 200 0
It shows 200 allocated objects from "my_cache"
and
#free -lm
total used free shared buffers cached
Mem: 48340 610 47730 0 96 130
the cached objects keep on growing.
After 5 mins in which I am doing some alloc and free-
total used free shared buffers cached
Mem: 48340 616 47723 0 96 137
/proc/slabinfo remains the same.
Any help is appreciated.
Thanks,
Prashant
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