[AMaViS-user] amavis process consuming >1GB RAM

Hello,

from time to time, our antivirus systems suffer from exhaustion of all
available RAM. I'm trying to find out what's going on.

10:07:31 up 41 days, 15 min, 3 users, load average: 3.87, 3.31, 2.51
154 processes: 150 sleeping, 4 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 40.6% 0.0% 6.0% 0.2% 0.4% 121.6% 30.4%
cpu00 22.5% 0.0% 3.3% 0.0% 0.3% 62.3% 11.3%
cpu01 18.1% 0.0% 2.7% 0.3% 0.1% 59.2% 19.1%
Mem: 2057208k av, 2046108k used, 11100k free, 0k shrd, 5028k
buff
1579648k actv, 299888k in_d, 30684k in_c
Swap: 4192956k av, 1112300k used, 3080656k free 145564k
cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
16250 amavis 17 0 1457M 1.3G 344 R 21.3 66.2 1:15 1 amavisd
25205 amavis 15 0 42888 29M 2596 S 4.3 1.4 0:13 1 amavisd
4666 mysql 16 0 30404 10M 1124 S 3.5 0.5 195:58 0 mysqld
26359 amavis 15 0 38684 25M 2332 D 3.1 1.2 0:02 1 amavisd
26488 amavis 16 0 38992 25M 2220 S 3.1 1.2 0:04 0 amavisd
26260 amavis 15 0 40524 28M 2296 D 2.1 1.4 0:03 0 amavisd
26815 amavis 17 0 17244 11M 1772 S 1.7 0.5 0:14 1 amavisd
22328 amavis 17 0 17356 10M 1736 S 1.1 0.5 0:13 0 amavisd
22172 amavis 17 0 17252 11M 1768 S 0.9 0.5 0:16 1 amavisd
7 root 15 0 0 0 0 SW 0.7 0.0 74:56 0 kswapd
27148 amavis 17 0 17248 11M 1852 S 0.7 0.5 0:09 1 amavisd
28369 postfix 15 0 1272 1272 964 S 0.3 0.0 0:00 1 cleanup
20526 clamav 15 0 62816 7724 488 S 0.1 0.3 1904m 1 clamd



[root@antivir4 spamassassin]# strace -p 16250
Process 16250 attached - interrupt to quit
pread(35, "\0\0\0\0\1\0\0\0\343\374\0\0\0\0\0\0\0\0\0\0\250\ 0p\1\0"...,
4096, 265170944) = 4096
pread(35,
"\0\0\0\0\1\0\0\0\6)\1\0\277\230\0\0\0\0\0\0>\0$\v \0\2\341"...,
4096,311451648) = 4096
open("/var/spool/amavis/.spamassassin/auto-whitelist.lock.antivir4.iol.cz.16250",
O_WRONLY|O_CREAT|O_EXCL|O_LARGEFILE, 0700) = 36
ioctl(36, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfffb1b8) = -1 ENOTTY
(Inappropriateioctl for device)
_llseek(36, 0, [0], SEEK_CUR) = 0
fstat64(36, {st_mode=S_IFREG|0700, st_size=0, ...}) = 0
fcntl64(36, F_SETFD, FD_CLOEXEC) = 0
<several minutes of no output>

Anybody has an idea? We've got Clamav and SA on this system, too -
Clamav as standalone process with IP socket communication, SA via Amavis
with some additional rules from SARE project.

Please, tell me where to look/what to post. Thanks!

RH ES 3 Linux, amavisd-new-2.2.0, spamassassin-3.0.1, clamav-0.83

--
************************************************** *********************
Pavel Urban (pavel.urban@ct.cz)
IOL system disaster
Internet OnLine, www.iol.cz (owned by Czech Telecom, www.ct.cz)
************************************************** *********************
Vegetables should not operate electronic equipment.
Computer Stupidities, http://rinkworks.com/stupid/
************************************************** *********************


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