will be used.
For Linux, a similar change should be made to /etc/nsswitch.conf:
hosts: nis dns files
•For each AIX ethernet network interface, verify that the en0 and et0 interfaces are not both configured at the same time (we recommend only using en0 unless the other nodes in the network are all using the 802.3 et* interface). Configure the local name service with the unique hostname for each network interface on all nodes and verify that each hostname is resolvable from other nodes.
•Verify that network TCP throughput has been optimized and the performance of each network is at expected levels in both directions (especially check HPSS data networks between Movers and between Mover and client nodes). Using ttcp or another network tool, measure the performance of all the networks that will be used in communications between Kerberos, HPSS, DB2, and client nodes. If multiple paths between nodes are to be used, then all of them need to be measured as well. The transfer rates for networks differ greatly depending upon the individual technology and network settings used. It is important to gather performance data using a variety of settings to determine the optimal combinations. The primary values that govern performance include send/receive buffers, size of reads/writes, and rfc1323 value for high performance networks (HIPPI,
To test the receiving node’s performance, issue:
% ttcp -r -s -b<bsize> -l<lsize>
To test the sending node’s performance, issue:
% ttcp -t -s -b<bsize> -l<lsize> <hostname/interfacename>
The following is an example of the information to be gathered from the above commands (assumes en0 is 10 MB Ethernet, if en0 is Fast or
Receiver Table | Bsize | Lsize | RFC1323 | Performance | |
Interface | |||||
CPU utilization | 16k | Off | |||
en0 | 16k | ||||
en0 | 16k | 8k | Off | ||
en0 | 64k | 64k | Off | ||
en0 | 64k | 32k | Off | ||
... | 64k | 64k | On | ||
ccs0 | |||||
ccs0 | 64k | 32k | On | ||
... |
|
|
|
|
|
Sender Table | Bsize | Lsize | RFC1323 | Performance | |
Interface | |||||
CPU utilization | 16k | Off | |||
en0 | 16k | ||||
en0 | 16k | 8k | Off | ||
en0 | 64k | 64k | Off | ||
en0 | 64k | 32k | Off | ||
HPSS Installation Guide | July 2008 |
Release 6.2 (Revision 2.0) | 130 |
