Hi Henrik,
I wrote about this issue several weeks ago and since I didn't get any answer, I assume it was not clear enough.(http://www.hobbitmon.com/hobbiton/2007/04/msg00119.html)
Let'me give a second try ;-)
We have several SAP servers under Solaris that are constantly over the swap warning threshold (50 %). SAP application does indeed *reserve* a lot of swap that confuses hobbit. In the following example the server has 32GB of RAM memory and 32GB of disk swap space.
Swap outputs
swap -s
total: 22347128k bytes allocated + 18080512k reserved = 40427640k used, 13640896k available
swap -l
swapfile dev swaplo blocks free /dev/md/dsk/d5 85,5 16 66341232 65799424
Hobbit memory col. display
Memory Used Total Percentage&green Physical 30460M 32768M 92% &yellow Swap 39493M 52779M 74%
Top display
last pid: 14928; load avg: 2.68, 2.37, 2.00; up 8+05:24:38 16:22:04 479 processes: 476 sleeping, 3 on cpu CPU states: 81.3% idle, 11.4% user, 7.3% kernel, 0.0% iowait, 0.0% swap Memory: 32G phys mem, 966M free mem, 32G total swap, 31G free swap ... ...
Hobbit computes Used and Total using "swap -s" and this gives a percentage of 74% where "top" tool only show ~ 3% (1/32) Since version 3.6, "top" for Solaris uses output of swap -l for swap usage. (details under #24 of the faq at http://www.unixtop.org/faq.shtml#title6)
We think Hobbit memory display should also be based on *disk* swap only (output of swap -l)
Dominique UNIL - University of Lausanne