On 26/07/2010 14:36, Steve Spencer wrote:
Lyle wrote:
Hi All,
I've got a DomU that sometimes goes mad. I can't ssh or usually even
console to it. The time I did manage to console I got a load of dumps
about being out of memory and swap, but couldn't run any commands to
find out which process had gone mad :(
From Dom0 I can see the DomU at 100% CPU and can only stop it with a
destroy. What can I do/check to find out why this happens? Sometimes
it'll be fine for weeks on end, others it'll go wrong almost every day.
The servers average load is very low, around 0.1. I assume there is a
process that goes wild for whatever reason, but no idea where to start
to track it down :(
I'm running the latest CentOS, any help much appreciated.
Lyle
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Lyle,
What services does this DomU run? In other words is it a mail server,
web server, radius, etc? What can you tell us about the DomU that would
be of help to us helping you?
Here is an abridged ps aux, I cut out what look like duplicates. Is
there a way of setting some kind of process logging to trigger once the
CPU % goes over 90%?
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.1 10348 600 ? Ss 06:14 0:00 init [3]
root 2 0.0 0.0 0 0 ? S< 06:14 0:00
[migration/0]
root 3 0.0 0.0 0 0 ? SN 06:14 0:00
[ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S< 06:14 0:00
[watchdog/0]
root 5 0.0 0.0 0 0 ? S< 06:14 0:00 [events/0]
root 6 0.0 0.0 0 0 ? S< 06:14 0:00 [khelper]
root 7 0.0 0.0 0 0 ? S< 06:14 0:00 [kthread]
root 9 0.0 0.0 0 0 ? S< 06:14 0:00 [xenwatch]
root 10 0.0 0.0 0 0 ? S< 06:14 0:00 [xenbus]
root 14 0.0 0.0 0 0 ? S< 06:14 0:00
[migration/1]
root 15 0.0 0.0 0 0 ? SN 06:14 0:00
[ksoftirqd/1]
root 16 0.0 0.0 0 0 ? S< 06:14 0:00
[watchdog/1]
root 17 0.0 0.0 0 0 ? S< 06:14 0:00 [events/1]
root 20 0.0 0.0 0 0 ? S< 06:14 0:00 [kblockd/0]
root 21 0.0 0.0 0 0 ? S< 06:14 0:00 [kblockd/1]
root 22 0.0 0.0 0 0 ? S< 06:14 0:00 [cqueue/0]
root 23 0.0 0.0 0 0 ? S< 06:14 0:00 [cqueue/1]
root 27 0.0 0.0 0 0 ? S< 06:14 0:00 [khubd]
root 29 0.0 0.0 0 0 ? S< 06:14 0:00 [kseriod]
root 94 0.0 0.0 0 0 ? S 06:14 0:00
[khungtaskd]
root 95 0.0 0.0 0 0 ? S 06:14 0:00 [pdflush]
root 96 0.0 0.0 0 0 ? S 06:14 0:00 [pdflush]
root 97 0.0 0.0 0 0 ? S< 06:14 0:01 [kswapd0]
root 98 0.0 0.0 0 0 ? S< 06:14 0:00 [aio/0]
root 99 0.0 0.0 0 0 ? S< 06:14 0:00 [aio/1]
root 229 0.0 0.0 0 0 ? S< 06:14 0:00 [kpsmoused]
root 254 0.0 0.0 0 0 ? S< 06:14 0:00 [kstriped]
root 267 0.0 0.0 0 0 ? S< 06:14 0:00 [ksnapd]
root 282 0.0 0.0 0 0 ? S< 06:14 0:00 [kjournald]
root 304 0.0 0.0 0 0 ? S< 06:14 0:00 [kauditd]
root 332 0.0 0.0 12604 348 ? S<s 06:14 0:00
/sbin/udevd -d
root 664 0.0 0.0 0 0 ? S< 06:14 0:00 [kmpathd/0]
root 665 0.0 0.0 0 0 ? S< 06:14 0:00 [kmpathd/1]
root 666 0.0 0.0 0 0 ? S< 06:14 0:00
[kmpath_handle]
root 688 0.0 0.0 0 0 ? S< 06:14 0:00 [kjournald]
root 1067 0.0 0.1 27348 696 ? S<sl 06:15 0:00 auditd
root 1069 0.0 0.1 81800 760 ? S<sl 06:15 0:00
/sbin/audispd
root 1089 0.0 0.1 5908 532 ? Ss 06:15 0:00 syslogd
-m 0
root 1092 0.0 0.0 3804 324 ? Ss 06:15 0:00 klogd -x
root 1101 0.0 0.0 10760 316 ? Ss 06:15 0:00 irqbalance
named 1138 0.0 1.2 166536 6728 ? Ssl 06:15 0:01
/usr/sbin/named
rpc 1171 0.0 0.0 8052 408 ? Ss 06:15 0:00 portmap
root 1215 0.0 0.0 0 0 ? S< 06:15 0:00 [rpciod/0]
root 1216 0.0 0.0 0 0 ? S< 06:15 0:00 [rpciod/1]
rpcuser 1223 0.0 0.1 10160 564 ? Ss 06:15 0:00 rpc.statd
root 1245 0.0 0.0 55180 236 ? Ss 06:15 0:00 rpc.idmapd
dbus 1258 0.0 0.1 21356 852 ? Ss 06:15 0:00
dbus-daemon --s
root 1266 0.0 0.0 10432 376 ? Ss 06:15 0:00
/usr/sbin/hcid
root 1272 0.0 0.0 5936 392 ? Ss 06:15 0:00
/usr/sbin/sdpd
root 1294 0.0 0.0 0 0 ? S< 06:15 0:00 [krfcommd]
root 1329 0.0 0.0 21040 524 ? Ssl 06:15 0:00 pcscd
root 1347 0.0 0.0 8516 364 ? Ss 06:15 0:00
/usr/bin/hidd -
root 1380 0.0 0.1 54396 836 ? Ssl 06:15 0:00 automount
root 1399 0.0 0.1 63516 532 ? Ss 06:15 0:00
/usr/sbin/sshd
root 1407 0.0 0.1 134096 952 ? Ss 06:15 0:00 cupsd
root 1419 0.0 0.1 21644 540 ? Ss 06:15 0:00 xinetd
-stayali
root 1430 0.0 0.0 44268 188 ? Ss 06:15 0:00
/usr/sbin/vsftp
root 1462 0.0 0.1 65980 996 ? S 06:15 0:00 /bin/sh
/usr/bi
mysql 1509 0.0 0.8 191260 4308 ? Sl 06:15 0:00
/usr/libexec/my
postgres 1589 0.0 0.2 120740 1344 ? S 06:15 0:00
/usr/bin/postma
root 1600 0.0 0.0 6060 500 ? Ss 06:15 0:00
/usr/sbin/dovec
root 1608 0.0 0.2 62500 1300 ? S 06:15 0:00
dovecot-auth
dovecot 1612 0.0 0.2 33892 1300 ? S 06:15 0:00 imap-login
postgres 1615 0.0 0.0 109920 176 ? S 06:15 0:00
postgres: logge
nobody 1622 0.0 31.0 212288 163000 ? Ssl 06:15 0:06
clamd.virtualmi
postgrey 1632 0.0 1.0 111480 5380 ? Ss 06:15 0:00
/usr/sbin/postg
root 1684 0.0 0.3 54144 1828 ? Ss 06:15 0:00
/usr/libexec/po
postfix 1691 0.0 0.3 55160 1932 ? S 06:15 0:00 qmgr -l
-t fifo
root 1701 0.0 0.0 6452 256 ? Ss 06:15 0:00 gpm -m
/dev/inp
postfix 1733 0.0 0.3 54204 1868 ? S 06:15 0:00 tlsmgr
-l -t un
root 1743 0.0 0.6 319152 3244 ? Ss 06:15 0:00
/usr/sbin/httpd
apache 1746 0.0 0.0 249564 444 ? S 06:15 0:00
/usr/sbin/httpd
root 1752 0.0 0.1 74860 724 ? Ss 06:15 0:00 crond
root 1763 0.0 0.0 49764 420 ? Ss 06:15 0:00 squid -D
squid 1765 0.0 0.5 52236 3128 ? S 06:15 0:00 (squid) -D
squid 1767 0.0 0.0 3644 184 ? Ss 06:15 0:00 (unlinkd)
apache 1779 0.0 0.0 319064 424 ? S 06:15 0:00
/usr/sbin/fcgi-
sympa 1780 0.0 4.3 258180 22672 ? S 06:15 0:01
/usr/bin/perl -
xfs 1796 0.0 0.1 20260 568 ? Ss 06:15 0:00 xfs
-droppriv -
root 1811 0.0 0.0 18732 352 ? Ss 06:15 0:00
/usr/sbin/atd
root 1819 0.0 0.0 46740 304 ? Ss 06:15 0:00
/usr/sbin/sasla
sympa 1833 0.0 4.1 230640 21652 ? S 06:15 0:01
/usr/bin/perl -
avahi 1840 0.0 0.1 24172 1032 ? Ss 06:15 0:00
avahi-daemon: r
68 1849 0.0 0.1 30428 976 ? Ss 06:15 0:00 hald
root 1850 0.0 0.1 21692 532 ? S 06:15 0:00 hald-runner
mailman 1866 0.0 0.1 149556 692 ? Ss 06:15 0:00
/usr/bin/python
root 1898 0.0 0.7 257084 3736 ? SN 06:15 0:00
/usr/bin/python
root 1900 0.0 0.1 12916 852 ? SN 06:15 0:00
/usr/libexec/ga
root 1927 0.0 0.0 0 0 ? Z 06:16 0:00 [sen]
<defunct>
root 2046 0.0 0.3 125808 1740 ? Ss 06:16 0:00
/usr/libexec/we
root 2056 0.0 0.0 18416 240 ? S 06:16 0:00
/usr/sbin/smart
root 2069 0.0 0.1 52108 892 ? Ss 06:16 0:00 login
-- root
postfix 13030 0.0 0.5 54348 2636 ? S 08:12 0:00
trivial-rewrite
postfix 17743 0.0 0.4 54208 2240 ? S 09:14 0:00 pickup
-l -t fi
postfix 18474 0.0 0.4 54204 2288 ? S 09:24 0:00 anvil
-l -t uni
postfix 19504 0.0 0.5 54428 2660 ? S 09:35 0:00 local
-t unix
dovecot 19540 0.0 0.3 33884 1632 ? S 09:35 0:00 pop3-login
postfix 19543 0.0 0.8 72672 4492 ? S 09:35 0:00 smtpd
-n smtp -
postfix 19660 0.0 0.5 54468 2684 ? S 09:40 0:00 cleanup
-z -t u
postfix 19947 0.0 0.8 72672 4484 ? S 09:41 0:00 smtpd
-n smtp -
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