I have a server with 3GB RAM running
CentOS-4.4.x86, hosting several domains.
There are these lines in /etc/fstab:
none /dev/shm tmpfs noexec,nosuid,rw
none /var/spool/MailScanner/incoming tmpfs defaults 0 0
'df -h' shows that /dev/shm takes 50% of RAM, while there are actually some
Filesystem Size Used Avail Use% Mounted on
none 1.5G 28K 1.5G 1% /var/spool/MailScanner/incoming
1) how can I make /dev/shm smaller, say 512MB? I believe it will be more
than sufficient for Mailscanner.
2) what else can I make run from /dev/shm to gain performance?