cddl/contrib/dtracetoolkit/Examples/nfswizard_example.txt

   1 The following is a demonstration of the NFS client wizard tool, nfswizard.d,
   2
   3
   4
   5    # nfswizard.d
   6    Tracing... Hit Ctrl-C to end.
   7    ^C
   8    NFS Client Wizard. 2005 Dec  2 14:59:07 -> 2005 Dec  2 14:59:14
   9
  10    Read:  4591616 bytes (4 Mb)
  11    Write: 0 bytes (0 Mb)
  12
  13    Read:  640 Kb/sec
  14    Write: 0 Kb/sec
  15
  16    NFS I/O events:    166
  17    Avg response time: 8 ms
  18    Max response time: 14 ms
  19
  20    Response times (us):
  21               value  ------------- Distribution ------------- count
  22                 128 |                                         0
  23                 256 |                                         1
  24                 512 |@@@                                      14
  25                1024 |@                                        4
  26                2048 |@@@@@@@                                  30
  27                4096 |@@@@@                                    20
  28                8192 |@@@@@@@@@@@@@@@@@@@@@@@                  97
  29               16384 |                                         0
  30
  31    Top 25 files accessed (bytes):
  32       PATHNAME                                                         BYTES
  33       /net/mars/var/tmp/adm/vold.log                                   4096
  34       /net/mars/var/tmp/adm/uptime                                     4096
  35       /net/mars/var/tmp/adm/mail                                       4096
  36       /net/mars/var/tmp/adm/authlog.5                                  4096
  37       /net/mars/var/tmp/adm/ftpd                                       12288
  38       /net/mars/var/tmp/adm/spellhist                                  16384
  39       /net/mars/var/tmp/adm/messages                                   16384
  40       /net/mars/var/tmp/adm/utmpx                                      20480
  41       /net/mars/var/tmp/adm/ftpd.2                                     20480
  42       /net/mars/var/tmp/adm/ftpd.3                                     20480
  43       /net/mars/var/tmp/adm/ftpd.1                                     24576
  44       /net/mars/var/tmp/adm/ftpd.0                                     24576
  45       /net/mars/var/tmp/adm/lastlog                                    28672
  46       /net/mars/var/tmp/adm/ipf                                        61440
  47       /net/mars/var/tmp/adm/loginlog                                   69632
  48       /net/mars/var/tmp/adm/ipf.4                                      73728
  49       /net/mars/var/tmp/adm/messages.20040906                          81920
  50       /net/mars/var/tmp/adm/ipf.3                                      102400
  51       /net/mars/var/tmp/adm/ipf.1                                      110592
  52       /net/mars/var/tmp/adm/ipf.5                                      114688
  53       /net/mars/var/tmp/adm/ipf.2                                      114688
  54       /net/mars/var/tmp/adm/ipf.0                                      122880
  55       /net/mars/var/tmp/adm/route.log                                  266240
  56       /net/mars/var/tmp/adm/pppd.log                                   425984
  57       /net/mars/var/tmp/adm/wtmpx                                      2842624
  58
  59
  60
  61 In the above demonstration, we run nfswizard.d for several seconds then hit
  62 Ctrl-C. The report contains useful information about NFS client activity,
  63 including response time statistics and file access details.
  64
  65 Note: this is measuring activity caused by NFS client processes (which must
  66 be on the same server). It is not examining NFS server processes.
  67