Memory and swap problem
I have a question regarding memory and swap calculations in Solaris.
I have box that has 2GB of RAM and 3GB of swap.
I use ps command to check how much memory each program consumes. When I sum results I get numbers those are much smaller than memory and swap sizes: sum of the total size of the process in virtual memory - 866 664KB; sum of the resident set size of the process - 656 552KB.
At the same time, when I'm checking free memory space by vmstat, I see only 35 840KB of free memory space out of 2 GB and 17 688RB of free swap space out of 3GB.
When I try to run programs, in some cases, I get messages that there is not enough memory. Something like this:
can't mmap anonymous memory: Resource temporarily unavailable
not enough memory: Resource temporarily unavailable
Not enough space
How can I find out why I run out of swap and memory?
Have anyone faced the same situations and what could be done to get back "lost" hundreds of megabytes without box rebooting?
What could be the reason of such situation?
After the box reboot, "lost" megabytes "returned" but after some time the system again run out of memory and swap.
Outputs of some commands are below.
bash-2.05$ prtconf |head -2
System Configuration: Sun Microsystems sun4u
Memory size: 2048 Megabytes
bash-2.05$ swap -l
swapfile dev swaplo blocksfree
/dev/md/dsk/d385,316 40994248464
/swap/do_not_delete_swap_file ?,?16 2097136 166640
bash-2.05$ swap -s
total: 4604496k bytes allocated + 99648k reserved = [b]4704144k used[/b], 17768k available
bash-2.05$ vmstat 1 2
kthrmemorypagedisk faultscpu
r b wswap free re mf pi po fr de sr m0 m1 m3 m4insycs us sy id
0 0 0 2078664 646232 6 11 11 8 9 0 2 0 0 0 0 517 298 206 2 0 98
0 0 0 [b]17688 35840[/b]07 0 0 0 0 0 0 0 0 0 51057 119 0 0 100
bash-2.05$ ps -eo user,pid,vsz,rss,s,etime,args
USERPID VSZ RSS SELAPSED COMMAND
root000 T 8-23:32:55 sched
root1 1272 176 S 8-23:32:54 /etc/init -
root200 S 8-23:32:54 pageout
root300 S 8-23:32:54 fsflush
root263 1824 856 S 8-23:31:38 /usr/lib/saf/sac -t 300
root257 2712 1288 S 8-23:31:38 /usr/sbin/vold
root60 2336 752 S 8-23:32:48 /usr/lib/sysevent/syseventd
root68 2904 808 S 8-23:32:47 /usr/lib/picl/picld
root170 3744 1680 S 8-23:32:41 /usr/sbin/syslogd
root266 1832 880 S 8-23:31:37 /usr/lib/saf/ttymon
root148 2008 672 S 8-23:32:43 /usr/sbin/inetd -s
root174 2328 1112 S 8-23:32:41 /usr/sbin/cron
root190 3296 1904 S 8-23:32:40 /usr/sbin/nscd
root213 1776 536 S 8-23:32:40 /usr/sadm/lib/smc/bin/smcboot
root198 1096 616 S 8-23:32:40 /usr/lib/utmpd
root212 1776 848 S 8-23:32:40 /usr/sadm/lib/smc/bin/smcboot
root214 1776 536 S 8-23:32:40 /usr/sadm/lib/smc/bin/smcboot
root235 3096 864 S 8-23:31:39 /usr/sbin/mdmonitord
root264 1832 792 S 8-23:31:38 /usr/lib/saf/ttymon -g -h -p am-t-csmr1 console login: -T sun -d /dev/console
root268 3200 1216 S 8-23:31:37 /usr/lib/ssh/sshd
appuser 3896 810256 631360 S13:09:24 /export/home/appuser/j2sdk1.4.2_14/bin/java -server -Xms512m -Xmx1536m -XX:NewS
appuser 4218 2664 1968 S28:50 -bash
appuser 4230 1136 848 O0:-01 ps -eo user,pid,vsz,rss,s,etime,args
appuser 4216 6320 1936 O28:50 /usr/lib/ssh/sshd
root 4213 6320 3936 S28:59 /usr/lib/ssh/sshd
appuser 3886 1160 968 S13:09:24 /bin/sh ./startWLS.sh amdvt
