Could somebody please provide your thoughts or inputs on below mentioned
issue.
Regards,
Ravikumar
ravikumar wrote:
Hi all,
I've some application which will do much I/O disk. While this
application is running the memory usage of system is continuously
increasing.
After stopping my process , no memory usage increased. But
leaked/increased memory was not released back upon my application
exit.This proves that there is no potential memory leaks in my
process. Also /proc/<PID>/status file contents are not changing from
start to end.
Where is leaked memory was gone even though my application terminates ?
I assumed that memory reserved for kernel buffer cache is not
releasing back. Correct me if assumption is wrong.
So i wanted test Linux Kernel buffer cache memory
allocation/release, I take Linux command line utility 'du'
Before running this utility , the 'free -m' command output is:
total used free shared buffers cached
Mem: 1004 79 924 0 1 21
-/+ buffers/cache: *57* 946
Swap: 1992 7 1985
I ran du command on */* directory.It had given the output and
exited.Now free command output is:
total used free shared buffers cached
Mem: 1004 166 837 0 37 21
-/+ buffers/cache: *106* 897
Swap: 1992 7 1985
106-57=49M is not released back.
The same behavior I observed with my application.
I stuck up at this stage to analyze the issue.
Is really Linux Kernel is taken the physical memory for buffering and
not releasing in back ?
If yes , how long it will hold ?
Regards,
Ravikumar
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