Free , memory usage

[Altera_Forum]

Dear everyone. 

my platform is NIOS2+Uclinux2.6! and I hae a 16Mbytes SDRAM chip on board, but when I use "free" command to dispaly the memeory status!, list information is diaolayed.  total used free shared buffers  mem 14616 8836 5780 0 0   total = used+free ,but not 16 Mbytes, I can't understand free command well. who can tell me why?  Best Regards,  Fei WU

[Altera_Forum]

--- Quote Start ---  originally posted by feiwu@Apr 12 2006, 11:03 AM dear everyone.  my platform is nios2+uclinux2.6! and i hae a 16mbytes sdram chip on board, but when i use "free" command to dispaly the memeory status!, list information is diaolayed.                   total  used    free  shared    buffers   mem        14616 8836  5780        0              0   total = used+free ,but not 16 mbytes, i can&#39;t understand free command well. who can tell me why?  best regards,  fei wu <div align='right'><{post_snapback}> (index.php?act=findpost&pid=14266)  --- quote end ---    --- Quote End ---  # MemTotal: Total usable ram (i.e. physical ram minus a few reserved bits and the kernel binary code)# MemFree: Is sum of LowFree+HighFree (overall stat)# MemShared: 0; is here for compat reasons but always zero.# Buffers: Memory in buffer cache. mostly useless as metric nowadays# Cached: Memory in the pagecache (diskcache) minus SwapCache  read "man free" , "man proc" . try some search google, "/proc/meminfo", and you can learn more.

[Altera_Forum]

Dear hippo, 

Thank you very much for giving me a method!  Best Regards!  Fei WU