* To approximate the amount of memory being used by the kernel:
kstat | grep pp_kernel | awk '{ print ($2*8192)/(1024*1024), "MB"; }'

* Kernel memory usage breakdown:
echo "::memstat" | mdb -k (as "root")

Page Summary Pages MB %Tot
------------ ---------------- ---------------- ----
Kernel 122064 953 12%
Anon 147000 1148 15%
Exec and libs 14329 111 1%
Page cache 54188 423 5%
Free (cachelist) 547198 4274 55%
Free (freelist) 115649 903 12%

Total 1000428 7815

* Using alternative ld.so (on Solaris 9 or later versions):
LD_LIBRARY_PATH=/path/as/needed /path/to/alternative/ld.so.1 /path/to/executable

* To force 64-bit linker use:
export LD_ALTEXEC=/usr/ccs/bin/sparcv9/ld

* Stack trace using mdb:
echo '::stack'|mdb core

* Use prstat -m to determine if the system has a memory shortage. Scan processes and check the amount of time they are sleeping on page-in; this is visible via the datafault microstate, visible from prstat -m as DFL. As a rule of thumb, if processes are spending more than 5% of their wall clock time in data faults, then there is a memory shortage. This method gives a true indication how much slower a process is running due to memory pressure