http://www.linuxquestions.org – I have installed "top" to monitor memory usage (Solaris 10 10/09 s10s_u8wos_08a SPARC). It shows, more or less, this same what vmstat. Free memory = 5580M Code: Memory: 2048M phys mem, 5580M free mem, 1024M total swap, 958M free swap Code: vmstat 1 3 kthr memory page disk faults cpu r b w swap free re mf pi po fr de sr s0 s1 s2 s3 in sy cs us sy id 0 0 0 13783928 6501944 1 2 0 0 0 0 1 2 2 3 3 280 1414 132 3 1 96 0 0 0 13006624 5714672 7 37 0 0 0 0 0 0 0 0 0 231 734 25 0 0 100 0 0 0 13006464 5714512 4 4 0 0 0 0 0 0 0 0 0 218 695 26 1 0 99 Can anyone explain me how is this possible I have 5580M free mem. Please note that: Physical Memory: 2048M Total Swap: 1024M So how is that possible i see: 5580M free mem ? (HowTos)