Q-Logic IB6054601-00 D Switch User Manual


 
2 – InfiniPath Cluster Administration
Performance and Management Tips
2-18 IB6054601-00 D
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nodes. Since these are presumed to be specialized computing appliances, they
do not need many of the service daemons normally running on a general Linux
computer.
Following are several groups constituting a minimal necessary set of services.
These are all services controlled by
chkconfig. To see the list of services that are
enabled, use the command:
$ /sbin/chkconfig --list | grep -w on
Basic network services:
network
ntpd
syslog
xinetd
sshd
For system housekeeping:
anacron
atd
crond
If you are using NFS or yp passwords:
rpcidmapd
ypbind
portmap
nfs
nfslock
autofs
To watch for disk problems:
smartd
readahead
The service comprising the InfiniPath driver and SMA:
infinipath
Other services may be required by your batch queuing system or user community.
2.10.2
Disable Powersaving Features
If you are running benchmarks or large numbers of short jobs, it is beneficial to
disable the powersaving features of the Opteron. The reason is that these features
may be slow to respond to changes in system load.
For rhel4, fc3 and fc4, run this command as root:
# /sbin/chkconfig --level 12345 cpuspeed off