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
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