| vps memory leak [message #2681] |
Sun, 16 April 2006 10:13 |
grummund
Messages: 1
Registered: April 2006
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Junior Member |
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Hi,
Could someone tell me if this problem is due to a bug in openvz or a possible configuration error?
I have been allocated 64MB RAM on this vps, which should be enough for my needs but it seems all too easy to stuff the system and end up with a permanent "fork: Cannot allocate memory" errors.
What raises suspicions is this from bean_counters:
uid resource held maxheld barrier limit failcnt
privvmpages 14192 19309 16384 16384 723
how can maxheld be greater than barrier??
Pasted below are the full actions to cause this, the above snippet is from the last cat of bean_counters.
I have also raised a report for this in bugzilla:
http://bugzilla.openvz.org/show_bug.cgi?id=141
foobar:~# ls /
bin dev home lib mnt proc sbin swapfile tmp var
boot etc initrd media opt root srv sys usr
foobar:~# ls -l /
total 130268
drwxr-xr-x 2 root root 4096 Apr 11 08:21 bin
drwxr-xr-x 2 root root 4096 Dec 15 2004 boot
drwxr-xr-x 11 root root 24576 Apr 15 23:35 dev
drwxr-xr-x 35 root root 4096 Apr 15 23:35 etc
drwxrwsr-x 3 root staff 4096 Apr 15 11:26 home
drwxr-xr-x 2 root root 4096 Dec 20 11:44 initrd
drwxr-xr-x 6 root root 4096 Apr 15 11:18 lib
drwxr-xr-x 2 root root 4096 Dec 20 11:44 media
drwxr-xr-x 2 root root 4096 Dec 15 2004 mnt
drwxr-xr-x 2 root root 4096 Dec 20 11:44 opt
dr-xr-xr-x 339 root root 0 Apr 15 23:35 proc
drwx------ 3 root root 4096 Apr 15 21:50 root
drwxr-xr-x 2 root root 4096 Apr 11 08:21 sbin
drwxr-xr-x 2 root root 4096 Dec 20 11:44 srv
-rw-r--r-- 1 root root 133169152 Apr 15 23:23 swapfile
drwxr-xr-x 2 root root 4096 May 10 2005 sys
drwxrwxrwt 2 root root 4096 Apr 16 00:28 tmp
drwxr-xr-x 11 root root 4096 Dec 20 11:44 usr
drwxr-xr-x 13 root root 4096 Dec 20 11:44 var
foobar:~# df -h
Filesystem Size Used Avail Use% Mounted on
simfs 350M 304M 47M 87% /
tmpfs 443M 0 443M 0% /dev/shm
foobar:~# ls -hl /
total 128M
drwxr-xr-x 2 root root 4.0K Apr 11 08:21 bin
drwxr-xr-x 2 root root 4.0K Dec 15 2004 boot
drwxr-xr-x 11 root root 24K Apr 15 23:35 dev
drwxr-xr-x 35 root root 4.0K Apr 15 23:35 etc
drwxrwsr-x 3 root staff 4.0K Apr 15 11:26 home
drwxr-xr-x 2 root root 4.0K Dec 20 11:44 initrd
drwxr-xr-x 6 root root 4.0K Apr 15 11:18 lib
drwxr-xr-x 2 root root 4.0K Dec 20 11:44 media
drwxr-xr-x 2 root root 4.0K Dec 15 2004 mnt
drwxr-xr-x 2 root root 4.0K Dec 20 11:44 opt
dr-xr-xr-x 339 root root 0 Apr 15 23:35 proc
drwx------ 3 root root 4.0K Apr 15 21:50 root
drwxr-xr-x 2 root root 4.0K Apr 11 08:21 sbin
drwxr-xr-x 2 root root 4.0K Dec 20 11:44 srv
-rw-r--r-- 1 root root 127M Apr 15 23:23 swapfile
drwxr-xr-x 2 root root 4.0K May 10 2005 sys
drwxrwxrwt 2 root root 4.0K Apr 16 00:28 tmp
drwxr-xr-x 11 root root 4.0K Dec 20 11:44 usr
drwxr-xr-x 13 root root 4.0K Dec 20 11:44 var
foobar:~# rm /swapfile
foobar:~# cat /proc/user_beancounters
Version: 2.5
uid resource held maxheld barrier limit failcnt
207: kmemsize 641716 685388 33554432 67108864 0
lockedpages 0 0 4 4 0
privvmpages 11109 16206 16384 16384 100
shmpages 960 976 1152 1152 2
dummy 0 0 0 0 0
numproc 13 15 60 60 0
physpages 1197 1237 0 2147483647 0
vmguarpages 0 0 1725 2147483647 0
oomguarpages 1197 1237 1725 2147483647 0
numtcpsock 3 3 10 10 0
numflock 2 4 50 100 0
numpty 2 2 10 10 0
numsiginfo 0 2 256 256 0
tcpsndbuf 6660 13320 1048576 1048576 0
tcprcvbuf 0 2220 1048576 1048576 0
othersockbuf 2220 6408 65536 102400 0
dgramrcvbuf 0 1196 65536 102400 0
numothersock 7 10 10 10 0
dcachesize 52530 56135 99000 99000 0
numfile 141 160 800 1000 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
numiptent 4 4 50 50 0
foobar:~# cat /proc/user_beancounters
Version: 2.5
uid resource held maxheld barrier limit failcnt
207: kmemsize 641460 685388 33554432 67108864 0
lockedpages 0 0 4 4 0
privvmpages 11109 16227 16384 16384 436
shmpages 960 976 1152 1152 2
dummy 0 0 0 0 0
numproc 13 15 60 60 0
physpages 1198 1237 0 2147483647 0
vmguarpages 0 0 1725 2147483647 0
oomguarpages 1198 1237 1725 2147483647 0
numtcpsock 3 3 10 10 0
numflock 2 4 50 100 0
numpty 2 2 10 10 0
numsiginfo 0 2 256 256 0
tcpsndbuf 6660 13320 1048576 1048576 0
tcprcvbuf 0 2220 1048576 1048576 0
othersockbuf 2220 6408 65536 102400 0
dgramrcvbuf 0 1196 65536 102400 0
numothersock 7 10 10 10 0
dcachesize 52530 56135 99000 99000 0
numfile 141 160 800 1000 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
numiptent 4 4 50 50 0
foobar:~# ps
PID TTY TIME CMD
8017 pts/1 00:00:00 bash
9488 pts/1 00:00:00 ps
foobar:~# dd if=/dev/zero of=/swapfile bs=1M count=32
32+0 records in
32+0 records out
33554432 bytes transferred in 0.562373 seconds (59665788 bytes/sec)
foobar:~# ps
-su: fork: Cannot allocate memory
## NOTE: at this point I logged out from an idle shell to free
## up some memory. Then at least I can investigate whats up.
foobar:~# ps
PID TTY TIME CMD
8017 pts/1 00:00:00 bash
9966 pts/1 00:00:00 ps
foobar:~# ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1584 520 ? Ss Apr15 0:00 ini
root 20131 0.0 0.0 1628 540 ? Ss Apr15 0:00 /sbin/syslogd
root 20139 0.0 0.1 3544 928 ? Ss Apr15 0:00 /usr/sbin/sshd
daemon 20142 0.0 0.0 1764 364 ? Ss Apr15 0:00 /usr/sbin/atd
root 20145 0.0 0.0 1820 640 ? Ss Apr15 0:00 /usr/sbin/cron
root 8002 0.0 0.1 14516 1784 ? Ss 08:37 0:00 sshd: bb [priv]
bb 8005 0.0 0.1 14516 1372 ? R 08:37 0:00 sshd: bb@pts/1
bb 8006 0.0 0.1 2620 1424 pts/1 Ss 08:37 0:00 -bash
root 8017 0.0 0.1 2640 1460 pts/1 S 08:37 0:00 -su
root 10124 0.0 0.0 2564 848 pts/1 R+ 08:49 0:00 ps aux
foobar:~# ps alx
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
4 0 1 0 16 0 1584 520 - Ss ? 0:00 ini
1 0 20131 1 16 0 1628 540 - Ss ? 0:00 /sbin/syslogd
5 0 20139 1 16 0 3544 928 - Ss ? 0:00 /usr/sbin/sshd
1 1 20142 1 16 0 1764 364 - Ss ? 0:00 /usr/sbin/atd
1 0 20145 1 16 0 1820 640 - Ss ? 0:00 /usr/sbin/cron
5 0 8002 20139 15 0 14516 1784 - Ss ? 0:00 sshd: bb [priv]
5 1000 8005 8002 17 0 14516 1372 - R ? 0:00 sshd: bb@pts/1
0 1000 8006 8005 15 0 2620 1424 wait Ss pts/1 0:00 -bash
4 0 8017 8006 16 0 2640 1460 - R pts/1 0:00 -su
4 0 10205 8017 16 0 2376 684 - R+ pts/1 0:00 ps alx
foobar:~# cat /proc/user_beancounters
Version: 2.5
uid resource held maxheld barrier limit failcnt
207: kmemsize 495267 685388 33554432 67108864 0
lockedpages 0 0 4 4 0
privvmpages 14189 19309 16384 16384 615
[Updated on: Mon, 17 April 2006 08:00] Report message to a moderator |
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