In gluster top, for open, the current fd's and the maximum fd's opened (at some point of time) are printed. It can be helpful in debugging if the time at which the maximum files were open is also printed.
CHANGE: http://review.gluster.com/54 (Change-Id: I257bc29945d5acf8fb316f396fb011a2ab652d7a) merged in master by Anand Avati (avati)
Now the time at which the maximum fd's are opened is printed in gluster top.