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

Pavel,

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

> 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
....

1.4 GB is really bizarre, it indicates something is badly wrong
with the processing of that message.

> [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.1
>6250", 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>

Could be it has to do something with a db self-reorganization
or cleaning or database corruption. I suggest you move the
SA Bayes and AWL databases to SQL, it gives slightly better
performance and hugely reduced maintenance problems
(no auto-expiry issues).

Mark


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