Is there a command in linux (more specifically on CentOS 5), that shows how many bytes/sec each file is being read in the past few second. A similar tool in win7 is the Resource Monitor, which can show each file's read speed, and it is helpful diagnosing system performance degrade.
It is duplicate to https://stackoverflow.com/questions/9730509/show-each-files-read-write-rate, where I was told to ask here.