Wednesday, November 28, 2012

Swapping


You can see if any swapping has taken place since a UNIX server was started by running vmstat –s. If you see values other than zero on the swap ins or swap outs lines, then swapping has occurred:

Solaris > vmstat -s
     4123 swap ins
      118 swap outs
    12369 pages swapped in
    35254 pages swapped out
93593074720 total address trans. faults taken
16175338065 page ins
67075526 page outs
167117261315 pages paged in
153673896 pages paged out
157281194355 total reclaims
157268182842 reclaims from free list
        0 micro (hat) faults
93593074720 minor (as) faults
12433082155 major faults
22790008329 copy-on-write faults
30659757855 zero fill page faults
228888590 pages examined by the clock daemon
      112 revolutions of the clock hand
146623357 pages freed by the clock daemon
251218086 forks
  8106297 vforks
197058709 execs
994409866209 cpu context switches
584512421794 device interrupts
135390836607 traps
2614749602197 system calls
328390806433 total name lookups (cache hits 99%)
7844654930 user   cpu
8057496148 system cpu
25835471029 idle   cpu
        0 wait   cpu
Solaris >

No comments: