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- Listing tasks by non-swapped memory usage
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ps xa -eo pid,user,args,rss,vsize,size,pmem --sort rss
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* rss: resident set size, the non-swapped physical memory that a
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task has used (in kiloBytes)
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* vsize: virtual memory size of the process in KiB
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* size: approximate amount of swap space that would be required
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the process were to dirty all writable pages and then be
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swapped out. This number is very rough!