I noticed that my Ubuntu 10.04 server got incredibly slow. It seems there was a problem with nTop using most of the memory. I could uninstall it after restarting the server, as it was unresponsive until then.
But once uninstalled I found a lot of memory was used by many Apache processes. As my server runs webmin I guess it's normal at least 2 different Apache are running, but I don't get why I had so many processes:
698 mysql 147100 kB /usr/sbin/mysqld
1117 clamav 123380 kB /usr/sbin/clamd
8191 root 113148 kB clamscan --no-summary --stdout -
8211 root 108740 kB clamscan --no-summary --stdout -
720 bind 87288 kB /usr/sbin/named -u bind
1655 www-data 61132 kB /usr/sbin/apache2 -k start
1656 www-data 61132 kB /usr/sbin/apache2 -k start
1657 www-data 61132 kB /usr/sbin/apache2 -k start
1658 www-data 61132 kB /usr/sbin/apache2 -k start
1659 www-data 61132 kB /usr/sbin/apache2 -k start
1680 www-data 61132 kB /usr/sbin/apache2 -k start
1726 www-data 61132 kB /usr/sbin/apache2 -k start
1759 www-data 61132 kB /usr/sbin/apache2 -k start
1573 root 60616 kB /usr/sbin/apache2 -k start
798 postgres 45184 kB postgres: autovacuum launcher process
767 postgres 45048 kB /usr/lib/postgresql/8.4/bin/postgres -D /var/lib/postgresql/8.4/main -c config_f ...
796 postgres 45048 kB postgres: writer process
797 postgres 45048 kB postgres: wal writer process
1594 www-data 39588 kB /usr/sbin/apache2 -k start
Do you think it's normal?