i get consistent results with iostats for building pc64.
(on amd64)
166 192 104916 0 0 /bin/rc
4 90 343308 0 0 /bin/awk
37 51 51280 0 0 /bin/echo
17 43 103786 0 0 /bin/sed
3 17 51567 0 0 /bin/ls
3 12 34624 0 0 /bin/grep
13 24 40114 0 0 /bin/cp
1 6 19112 0 0 /bin/pwd
4 15 40658 0 0 /bin/xd
128 192 263785 0 0 /bin/6c
5 34 113149 0 0 /bin/6l
4 27 89551 0 0 /bin/6a
1 10 33360 0 0 /bin/mkdir
2 9 22016 0 0 /bin/dd
4 18 55085 0 0 /bin/strip
1 17 62301 0 0 /bin/mkpaqfs
4 14 33797 0 0 /bin/rm
2 3 121 0 0 /bin/membername
2 15 46432 0 0 /bin/tr
1 19 72544 0 0 /bin/ar
1 4 10992 0 0 /bin/cat
2 24 86580 0 0 /bin/hoc
4 26 86433 0 0 /bin/file
4 13 33439 0 0 /bin/aux/data2s
1 7 23488 0 0 /bin/date
1 14 49502 0 0 /bin/size
1 25 94969 0 0 /bin/mk
i made a small test trying running echo 1,2,3 and 4 times
and i get exactly one additional read per exec (which
is the read of the file header) all the other pages
are cached.
with MCACHE mount, it is exactly the same amount of
reads no matter how often i run it. :)
but thats not loaded. is your machine starved of memory?
my guess would be that the cached pages getting uncached
and reused in your case. i remember fixing some bugs
in imagereclaim that could potentially cause this.
but thats all speculation...
theres a statistics struct there that you can peek on
from acid -k and see how often imagereclaim runs between
your test passes.
--
cinap
