The nfsstat -m command

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The nfsstat -m command displays the server name, mount flags, current read and write sizes, retransmission count, and the timers used for dynamic retransmission for each NFS mount on the client. If the -i flag is used along with -m, the server IP address is also displayed.

The following is an example:

# nfsstat -m
/SAVE from /SAVE:aixhost.ibm.com
 Flags:   vers=2,proto=udp,auth=unix,soft,intr,dynamic,rsize=8192,wsize=8192,retrans=5
 Lookups: srtt=27 (67ms), dev=17 (85ms), cur=11 (220ms)
 Reads:   srtt=16 (40ms), dev=7 (35ms), cur=5 (100ms)
 Writes:  srtt=42 (105ms), dev=14 (70ms), cur=12 (240ms)
 All:     srtt=27 (67ms), dev=17 (85ms), cur=11 (220ms)

The numbers in parentheses in the example output are the actual times in milliseconds. The other values are unscaled values kept by the operating system kernel. You can ignore the unscaled values. Response times are shown for lookups, reads, writes, and a combination of all of these operations, All. Other definitions used in this output are as follows:

srtt: Smoothed round-trip time
dev: Estimated deviation
cur: Current backed-off timeout value