# @(#)usermem.sh 5.4 (Berkeley) %G%
: This shell
script snoops around to
find the maximum amount of available
: user memory. These variables need to be
set only
if there is no
: /usr
/adm
/messages. KMEM
, UNIX
, and CLICKSIZE can be
set on the
command
: line
, if desired
, e.g. UNIX
=/unix
KMEM
=/dev
/kmem
# User needs read access to KMEM
# VAX CLICKSIZE=512, UNIX=/vmunix
# PDP-11 CLICKSIZE=64, UNIX=/unix
# CADLINC 68000 CLICKSIZE=4096, UNIX=/unix
# Perkin-Elmer 3205 CLICKSIZE=4096, UNIX=/edition7
# Perkin-Elmer all others, CLICKSIZE=2048, UNIX=/edition7
: User must have specified it already.
CLICKSIZE
=512 # Probably VAX
CLICKSIZE
=2048 # Perkin-Elmer: change to 4096 on a 3205
UNIX
=/unix
# Could be anything
# messages: probably the most transportable
if test -r /usr
/adm
/messages
-a -s /usr
/adm
/messages
SIZE
=`grep avail /usr/adm/messages | sed -n '$s/.*[ ]//p'`
if test 0$SIZE -le 0 # no SIZE in /usr/adm/messages
if test -r $KMEM # Readable KMEM
SIZE
=`echo maxmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'`
SIZE
=`echo physmem/D | adb $UNIX $KMEM | sed -n '$s/.*[ ]//p'`
SIZE
=`expr 0$SIZE '*' $CLICKSIZE`
/vmunix
) # Assume 4.2bsd: check for resource limits
MAXSIZE
=`csh -c limit | awk 'BEGIN { MAXSIZE = 1000000 }
/datasize|memoryuse/ && NF == 3 { if ($2 < MAXSIZE) MAXSIZE = $2 }
END { print MAXSIZE * 1000 }'`
if test $MAXSIZE -lt $SIZE