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What is using all my RAM? Understanding the output of top

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linux-howto

http://serverfault.com – I've read a number of top memory use questions but I don't think they answer this. Here's the most significant part of a top run: top - 01:11:41 up 4 days, 1:06, 3 users, load average: 0.00, 0.03, 0.26 Tasks: 86 total, 1 running, 84 sleeping, 0 stopped, 1 zombie Cpu(s): 0.4%us, 0.4%sy, 0.0%ni, 99.2%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1022816k total, 986704k used, 36112k free, 11200k buffers Swap: 1048572k total, 419088k used, 629484k free, 408172k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND (HowTos)