Hello list,
I have a SLES 11 SP3 system that is leaking memory, but I don't know how or
where.
I find a script on the Internet that runs forever, adapt it somewhat, and
start logging some info to a temp file. Here's the script:
# cat memusage
#!/bin/bash
#
# track memory usage
#
outFile="/tmp/memusage"
while true
do
echo "---------------------------------------------------" >> $outFile
date >> $outFile
ps aux --sort -vsz | head -22 >> $outFile
echo >> $outFile
free -m >> $outFile
sleep 300
done
After a fresh reboot of a 512 MB virtual machine, I start the script and
the first entry in the temp file shows about 20 MB (512 - 492) used by
Linux and 97 MB used by processes:
Wed Jul 8 12:37:45 EDT 2015
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 2181 0.0 0.2 115404 1024 ? Ssl 12:36 0:00
/usr/sbin/nscd
root 1851 0.0 0.1 11512 692 ? S<sl 12:36 0:00
/sbin/auditd -s disable
root 2556 0.3 0.7 11456 4004 ? Ss 12:37 0:00 sshd:
root@pts/0
root 2306 0.0 0.7 10720 3700 ? Ss 12:36 0:00
/usr/sbin/httpd2-prefork
wwwrun 2307 0.0 0.4 10720 2204 ? S 12:36 0:00
/usr/sbin/httpd2-prefork
wwwrun 2308 0.0 0.4 10720 2204 ? S 12:36 0:00
/usr/sbin/httpd2-prefork
wwwrun 2309 0.0 0.4 10720 2204 ? S 12:36 0:00
/usr/sbin/httpd2-prefork
wwwrun 2310 0.0 0.4 10720 2204 ? S 12:36 0:00
/usr/sbin/httpd2-prefork
wwwrun 2311 0.0 0.4 10720 2204 ? S 12:36 0:00
/usr/sbin/httpd2-prefork
root 1853 0.0 0.1 10428 824 ? S<sl 12:36 0:00
/sbin/audispd
root 997 0.0 0.6 9036 3224 ? Ssl 12:36 0:00
/usr/sbin/console-kit-da
root 2265 0.0 0.5 8136 2532 ? Ss 12:36 0:00
/usr/lib/postfix/master
postfix 2277 0.0 0.4 8004 2372 ? S 12:36 0:00 qmgr -l -t
fifo -u
postfix 2276 0.0 0.4 7948 2352 ? S 12:36 0:00 pickup -l
-t fifo -u
root 2172 0.0 0.3 7916 1532 ? Ss 12:36 0:00
/usr/sbin/sshd -o PidFi
101 994 0.0 0.5 7852 2804 ? Ss 12:36 0:00
/usr/sbin/hald --daemon
root 1869 0.0 0.8 6464 4504 ? Ss 12:36 0:00
/sbin/haveged -w 1024 -
root 2559 1.0 0.6 6056 3076 pts/0 Ss 12:37 0:00 -bash
root 998 0.0 0.2 3980 1332 ? S 12:36 0:00 hald-runner
root 2591 0.0 0.3 3652 1604 pts/0 S+ 12:37 0:00 /bin/bash
/usr/local/sb
root 2343 0.0 0.1 3508 944 ? Ss 12:36 0:00
/usr/sbin/xinetd -pidfi
total used free shared buffers cached
Mem: *492 97* 394 0 5 50
-/+ buffers/cache: 41 450
Swap: 898 0 898
This morning the last entry shows 156 MB used by processes: ~59 MB of
memory lost in less than a day. But the 'VSZ' of the top 22 processes seems
to be about the same:
Thu Jul 9 07:57:47 EDT 2015
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 2181 0.0 0.2 115404 1088 ? Ssl Jul08 0:00
/usr/sbin/nscd
root 1851 0.0 0.1 11512 692 ? S<sl Jul08 0:00
/sbin/auditd -s disable
root 44879 0.0 0.7 11456 4008 ? Ss 07:36 0:00 sshd:
root@pts/1
root 44913 0.0 0.7 11456 4008 ? Ss 07:37 0:00 sshd:
root@pts/2
root 2306 0.0 0.7 10720 3700 ? Ss Jul08 0:01
/usr/sbin/httpd2-prefork
wwwrun 2307 0.0 0.4 10720 2204 ? S Jul08 0:00
/usr/sbin/httpd2-prefork
wwwrun 2308 0.0 0.4 10720 2204 ? S Jul08 0:00
/usr/sbin/httpd2-prefork
wwwrun 2309 0.0 0.4 10720 2204 ? S Jul08 0:00
/usr/sbin/httpd2-prefork
wwwrun 2310 0.0 0.4 10720 2204 ? S Jul08 0:00
/usr/sbin/httpd2-prefork
wwwrun 2311 0.0 0.4 10720 2204 ? S Jul08 0:00
/usr/sbin/httpd2-prefork
root 1853 0.0 0.1 10428 824 ? S<sl Jul08 0:00
/sbin/audispd
root 997 0.0 0.6 9036 3224 ? Ssl Jul08 0:00
/usr/sbin/console-kit-da
root 2265 0.0 0.5 8136 2532 ? Ss Jul08 0:00
/usr/lib/postfix/master
postfix 2277 0.0 0.4 8004 2372 ? S Jul08 0:00 qmgr -l -t
fifo -u
postfix 44778 0.0 0.4 7948 2356 ? S 06:56 0:00 pickup -l
-t fifo -u
root 2172 0.0 0.3 7916 1664 ? Ss Jul08 0:00
/usr/sbin/sshd -o PidFi
101 994 0.0 0.5 7852 2852 ? Ss Jul08 0:00
/usr/sbin/hald --daemon
root 1869 0.0 0.8 6464 4504 ? Ss Jul08 0:00
/sbin/haveged -w 1024 -
root 44882 0.0 0.6 6056 3052 pts/1 Ss 07:36 0:00 -bash
root 44916 0.0 0.5 6056 2876 pts/2 Ss+ 07:37 0:00 -bash
mike 44992 0.0 0.5 6056 3004 pts/1 S+ 07:56 0:00 -bash
total used free shared buffers cached
Mem: *492 156 * 335 0 24 83
-/+ buffers/cache: 48 443
Swap: 898 0 898
Is there a better way to detect memory leaks? Are there any known
'culprits'?
Any help will be appreciated. Thanks.
-Mike MacIsaac
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