idsktune and RHEL 4?
AFAIK in RHEL 4 each process is alloted 1024 file descriptors and max files is approximately 102k by default. I have made the changes that idsktune recommends. One I get the feeling that it changes each process to 65536 which is to high. And second when I run idsktune again it states the same thing even though I have done the changes. Any suggestions on the best way to tune RHEL 4?
WARNING: There are only 1024 file descriptors available, which limits the number
of simultaneous connections.
Additional file descriptors are available by adding a line similar to the
following to /etc/sysctl.conf and using sysctl -p to reread that file:
fs.file-max = 65536
And by adding a line like the following to /etc/security/limits.conf:
*hard nofile 65536
It may also be necessary to raise the process limit by using the bash command
ulimit -n 65536
NOTICE : The net.ipv4.tcp_keepalive_time is set to 7200000 milliseconds
(120 minutes). This may cause temporary server congestion from lost
client connections.
