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LINUX-L  2007

LINUX-L 2007

Subject:

/dev/shm

From:

Arthur Sherman <[log in to unmask]>

Reply-To:

Platform Independent Linux List! <[log in to unmask]>

Date:

Sun, 4 Mar 2007 14:42:05 +0200

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (32 lines)

Hi,

I have a server with 3GB RAM running
sendmail/dovecot/bind/apache/proftpd/Mailscanner/SpamAssassin/antivirus @
CentOS-4.4.x86, hosting several domains.

There are these lines in /etc/fstab:
none                    /dev/shm                tmpfs   noexec,nosuid,rw
0 0
none /var/spool/MailScanner/incoming tmpfs defaults 0 0

'df -h' shows that /dev/shm takes 50% of RAM, while there are actually some
Kbytes there:
Filesystem            Size  Used Avail Use% Mounted on
none                  1.5G   28K  1.5G   1% /var/spool/MailScanner/incoming

My questions:
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?

Thanks!



Best,

--
Arthur Sherman

+972-52-4878851
CPTeam 

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