RedHat 7.1 performance/scalability tuning

Hubbard, David dhubbard at
Wed Aug 29 08:44:01 CDT 2001

If tuning for performance, run qmail or postfix instead of sendmail.


-----Original Message-----
From: Jeppie Sumpter [mailto:Jeppie.Sumpter at]
Sent: Wednesday, August 29, 2001 9:36 AM
To: linux poweredge
Subject: RedHat 7.1 performance/scalability tuning

I am working on a set of new mail servers and need to improve some of
the default characteristics.  I've already recompiled my glic to allow
the number of threads to be increased and now I am looking into some
file system tuning. I have found several references on increasing the
number of open files allowed but these are for 2.2.x kernels and not
2.4.x kernels.

The things I've seen to change are:
echo 128000 > /proc/sys/fs/inode-max
echo 64000 > /proc/sys/fs/file-max
ulimit -n 64000
editing the /etc/sysctl.conf file as sticking in some values.

The problem is that /proc/sys/fs/inode-max does not exist on these
systems and the MAX_INODE definitions do not exist in the source. Is
specifying the maximum number of inode no longer necessary in the 2.4.x

Much Thanks,
Jeppie Sumpter              MCSE, MCNE
Network Specialist           CCNA, CCSE
Western Kentucky University    SCSA, RHCE

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