That alone should not be alarming. Devices can use of memory and release them when not in use. You will have to look into other factors such as free, %wa, swap memory usage and also other process such as mgmtsrve, devsrvr etc.
top - 07:42:33 up 30 days, 19:01, 1 user, load average: 0.18, 0.18, 0.11
Tasks: 113 total, 2 running, 111 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.0%us, 4.8%sy, 0.7%ni, 91.2%id, 0.1%wa, 0.0%hi, 1.1%si, 0.0%st
Mem: 4057060k total, 3882756k used, 174304k free, 38372k buffers
Swap: 2008084k total, 4888k used, 2003196k free, 2598764k cached
Thanks for the reply.
I have already checked the other parameters and found it to be OK.
Query is the used memory seems to be quite high.Will it affect the performance later?
>show system resources follow
top - 15:21:38 up 18 days, 3:54, 2 users, load average: 0.01, 0.01, 0.00
Tasks: 120 total, 1 running, 115 sleeping, 0 stopped, 4 zombie
Cpu(s): 0.8%us, 0.3%sy, 0.2%ni, 98.5%id, 0.0%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 3850944k total, 3737368k used, 113576k free, 61696k buffers
Swap: 2008084k total, 6128k used, 2001956k free, 2065752k cached
Since, this is management-plane memory statistics, so it will not impact the actual production traffic. Once the device will fully utilize the primary memory "Mem: 3850944k total", then it will start using "swap" memory.
Much of the memory being used is being shown against "cached".
The system will allocate unused memory to act as a disk cache. This is returned to the free memory pool if a new or running process needs it.
This often gives the impression that there is not much memory free, but in reality the memory is just being put to good use until it is needed.
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