SCO NFS Configuration
Some concern over the performance of systems running SCO NFS has been
voiced. To enhance the performance a number of modifications are available to the
installer however, the first and most important issue is to ensure that the system has
adequate memory for the task. To examine the amount of memory being used use either
which indicates freemem and freeswap, or use
which reports swapins and swapouts. Either method should indicate no
swapping, action is strongly recommended if swapping is identified.
To increase disk performance with SCO NFS the variable MAXBUF in the
kernel should be increased from the default of 600 to at least 1000. This will also
improve significantly the performance of PC-NFS based systems when making use of the UNIX
and NFS host.
If you believe your system to be experiencing problems with Ethernet
packet retransmission then the mounting of NFS filesystems can be modified to vary the
transfer packet size. For example
|
/etc/mount -f NFS,rsize=1024,wsize=1024,intr server1:/ /mnt |
will set the transfer size to 1KB, the default is 8KB which is not
always the optimum value.
Finally on a network which is based around NFS it may well be necessary
to increase the number of NFS server daemons. The number of daemons is setup in the
startup script /etc/nfs with the line
Increasing the value from 4 will allow handling more filesystem requests
and is advisable on a server expecting high NFS loads.
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