Lines Matching +full:a +full:- +full:facing

5 :Authors: Greg Banks <[email protected]> - 26 Mar 2009
13 program from the nfs-utils distribution provides a helpful command-line
16 All the files described here are formatted as a sequence of text lines,
17 separated by newline '\n' characters. Lines beginning with a hash
19 by parsing routines. All other lines contain a sequence of fields
28 The first line is a comment which describes the fields present in
30 a sequence of unsigned decimal numeric fields. One line is shown
41 Thread pool ids are a contiguous set of small integers starting
44 Note that in the default case there will be a single thread pool
46 and thus this file will have a single line with a pool id of "0".
48 packets-arrived
51 sunrpc server layer that new data may be available on a transport
58 However this is a more accurate and less workload-dependent measure
62 sockets-enqueued
68 network-facing work to be done but it couldn't be done immediately,
69 thus introducing a small delay in servicing NFS calls. The ideal
70 rate of change for this counter is zero; significantly non-zero
71 values may indicate a performance limitation.
74 pool for the NFS workload (the workload is thread-limited), in which
78 threads-woken
83 network-facing NFS work is being handled quickly, which is a good
85 to but less than the rate of change of the packets-arrived counter.
87 threads-timedout
92 This statistic counts a circumstance where there are more nfsd
94 a clue that the number of nfsd threads can be reduced without
95 affecting performance. Unfortunately, it's only a clue and not
96 a strong indication, for a couple of reasons:
98 - Currently the rate at which the counter is incremented is quite
100 remains constant for hours at a time, this counter is unlikely
103 - It is usually a wise policy to provide some slack,
104 i.e. configure a few more nfsds than are currently needed,
109 one of three ways. An nfsd thread can be woken (threads-woken counts
111 (sockets-enqueued counts this case), or the packet can be temporarily
116 packets-deferred = packets-arrived - ( sockets-enqueued + threads-woken )