Memory leak and deep swap upon the restart?

[Kris Kennaway]

On Thu, Mar 15, 2007 at 06:55:24AM +0300, Abdullah Ibn Hamad Al-Marri wrote:
> Hello,
> 
> I have a webmail server, has apache 2.2.4, mysql 5.0.33, php 5.2.1,
> clamav, mailscanner ..etc.
> 
> The weird issue it goes into deep swap when it starts or I restart it. 
> *sigh*
> This happened since like 6 months I don't know why? it was okay before that.

Your running processes are trying to use more memory than is present
in your system, so swapping is the only possibility.

Look at the "VSZ" column (virtual size) to see how overloaded your
system is.

> USER       PID %CPU %MEM   VSZ   RSS  TT  STAT STARTED      TIME COMMAND

> vscan      449  0.0  0.7 45840  3520  ??  Ss    3:45AM   0:00.48
> amavisd (master) (perl5.8.8)
> root       474  0.0 10.9 61788 56864  ??  Ss    3:45AM   0:02.95
> /usr/local/bin/spamd -c -Q -d -r /var/run/spamd/spamd.pid (perl5.8
> vscan      482  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> vscan      483  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> vscan      484  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> vscan      485  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> vscan      486  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> vscan      487  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> vscan      488  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> vscan      489  0.0  0.0 46472     0  ??  IW   -         0:00.00
> amavisd (virgin child) (perl5.8.8)
> root       646  0.0  0.7 61788  3428  ??  I     3:45AM   0:00.01 spamd
> child (perl5.8.8)
> root       647  0.0  0.3 61788  1424  ??  I     3:45AM   0:00.00 spamd
> child (perl5.8.8)
> postfix    649  0.0  0.2 18916  1180  ??  Is    3:45AM   0:00.01
> MailScanner: master waiting for children, sleeping (perl5.8.8)
> postfix    650  0.0  0.5 79972  2464  ??  S     3:45AM   0:03.10
> MailScanner: waiting for messages (perl5.8.8)
> root       667  0.0  1.3 49788  6732  ??  Ss    3:45AM   0:00.18
> /usr/local/sbin/httpd
> www        742  0.0  0.0 49864     0  ??  IW   -         0:00.00
> /usr/local/sbin/httpd
> www        763  0.0  1.3 50704  6980  ??  I     3:45AM   0:00.02
> /usr/local/sbin/httpd
> www        765  0.0  2.0 52184 10140  ??  I     3:45AM   0:00.31
> /usr/local/sbin/httpd
> www        766  0.0  0.7 49856  3476  ??  I     3:45AM   0:00.01
> /usr/local/sbin/httpd
> www        767  0.0  0.7 49856  3476  ??  I     3:45AM   0:00.00
> /usr/local/sbin/httpd
> www        768  0.0  0.7 49856  3476  ??  I     3:45AM   0:00.01
> /usr/local/sbin/httpd
> www        769  0.0  2.1 50836 10788  ??  I     3:45AM   0:00.07
> /usr/local/sbin/httpd
> www        770  0.0  2.3 50936 12172  ??  I     3:45AM   0:00.21
> /usr/local/sbin/httpd
> www        771  0.0  0.0 49816     0  ??  IW   -         0:00.00
> /usr/local/sbin/httpd
> www        772  0.0  0.0 49816     0  ??  IW   -         0:00.00
> /usr/local/sbin/httpd
> www        773  0.0  0.0 49816     0  ??  IW   -         0:00.00
> /usr/local/sbin/httpd
> postfix    774  0.0  0.3 79972  1600  ??  S     3:45AM   0:03.05
> MailScanner: waiting for messages (perl5.8.8)
> postfix    775  0.0  0.3 79972  1792  ??  S     3:45AM   0:03.05
> MailScanner: waiting for messages (perl5.8.8)
> postfix    776  0.0  0.3 79972  1376  ??  S     3:45AM   0:03.05
> MailScanner: waiting for messages (perl5.8.8)
> postfix    777  0.0 14.4 79972 74812  ??  S     3:45AM   0:03.15
> MailScanner: waiting for messages (perl5.8.8)
> mysql      518  0.0  3.7 51508 19184 con- I     3:45AM   0:00.23
> /usr/local/libexec/mysqld --defaults-extra-file=/var/db/mysql/my.c

Kris