Hello Rangi:
This is not a bug. Linux will release the memory
when it is needed again. I've noticed this myself a few years ago using
cacti to view memory usage. Also, you should make sure that the Java apps
is using GC(garbage collection) correctly.
On Fri, Feb 6, 2009 at 8:04 PM, Rangi, Jai <jrangi@xxxxxxxxxxxxxx> wrote:
> All,
>
> Here I have a little issue with System memory and Java application. We
> have this java application that uses all the memory. If we shut down the
> application the memory does not come back. The developer think that this
> is bug in the Kernel.
>
>
>
> This is what I see on the server.
>
>
>
> [root@halapcnt4s ~]# ps aux | awk '{sum +=$4}; END {print sum}'
>
> 28.7
>
> Total Memory % used.
>
> [root@halapcnt4s ~]# free -t -m
>
> total used free shared buffers
> cached
>
> Mem: 24108 24083 24 0 66
> 659
>
> -/+ buffers/cache: 23358 750
>
> Swap: 2047 0 2046
>
> Total: 26155 24084 2071
>
> According to this 23.3 Gb is used out of 24GB.
>
> 29% of 24GB is 6.96GB. Now where is rest of (23.6-6.96) 16.34 GB memory
> is used?
>
> Thank you,
>
>
> Jai Rangi
>
>
>
>
>
>
>
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Ezra Taylor
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