Device Average Memory Usage High PA-3060

[GlblNetworkServices]

We have observed a high memory utilization on PA-3060 ,do we have to upgrade our RAM or this is normal behavior?

 show system resources

top - 02:47:35 up 631 days, 20:43, 1 user, load average: 0.02, 0.04, 0.05
Tasks: 117 total, 1 running, 115 sleeping, 0 stopped, 1 zombie
Cpu(s): 3.7%us, 1.3%sy, 0.3%ni, 94.5%id, 0.0%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 3849912k total, 3578864k used, 271048k free, 26640k buffers
Swap: 3056660k total, 880944k used, 2175716k free, 293052k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 20 0 16548 172 148 S 0.0 0.0 6:19.17 init
2 20 0 0 0 0 S 0.0 0.0 0:00.03 kthreadd
3 20 0 0 0 0 S 0.0 0.0 38:28.25 ksoftirqd/0
5 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
7 RT 0 0 0 0 S 0.0 0.0 5:21.79 migration/0
8 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
9 20 0 0 0 0 S 0.0 0.0 55:40.73 rcu_sched
10 RT 0 0 0 0 S 0.0 0.0 4:50.12 migration/1
11 20 0 0 0 0 S 0.0 0.0 39:00.33 ksoftirqd/1
13 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/1:0H
14 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper
230 0 -20 0 0 0 S 0.0 0.0 0:00.00 writeback
233 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
234 0 -20 0 0 0 S 0.0 0.0 0:00.00 kblockd
374 0 -20 0 0 0 S 0.0 0.0 0:00.00 xenbus_frontend
380 0 -20 0 0 0 S 0.0 0.0 0:00.00 ata_sff
387 20 0 0 0 0 S 0.0 0.0 0:00.00 khubd
396 0 -20 0 0 0 S 0.0 0.0 0:00.00 md
399 0 -20 0 0 0 S 0.0 0.0 0:00.00 edac-poller
510 0 -20 0 0 0 S 0.0 0.0 0:00.00 rpciod
523 20 0 0 0 0 S 0.0 0.0 9:19.26 kswapd0
524 39 19 0 0 0 S 0.0 0.0 11:49.03 khugepaged
525 20 0 0 0 0 S 0.0 0.0 0:00.00 fsnotify_mark

[BPry]

@GlblNetworkServices ,

Just giving us this list doesn't really tell us anything, because we have no idea what the traffic flowing through your firewall actually is. Nothing within your resources looks abnormal to me outside of your system uptime suggesting this box should probably be updated.