swapmem_on parameter

I have debate from long time. My server is swapmem_on set to '1'.  system is hpux 11.23

The below output says me system is reserving memory for swap from memory instead of devices. either the devices are not working

or physical they do not have enough space as being shown, or PRI is issue which puts memory in list first to reserve swap space for processes.

swapinfo -tm
             Mb      Mb      Mb   PCT  START/      Mb
TYPE      AVAIL    USED    FREE  USED   LIMIT RESERVE  PRI  NAME
dev        4096       0    4096    0%       0       -    1  /dev/vg00/lvol2
dev       32768       0   32768    0%       0       -    0  /dev/vg00/lvol9
dev       16384       0   16384    0%       0       -    0  /dev/vg00/lvol10
reserve       -   29426  -29426