Andreas ..
Andreas Höschler wrote:
Is such an entry in /etc/hosts really necessary? My /etc/nsswitch.conf
has "dns files" for resolving host names. I configured SGD for one
fully qualified domainname that can be resolved via dns to the
ipaddress of the machine. SGD basically works for me. However, it is
extremely slow. It takes 30-40s (telnet) to fireup a Window Maker
FullScreen session and that on a 2 x 1.6GHz machine with nothing else
to do and even much more when using ssh for the connection method. The
old SunFire 280 2 x 900MHz presented a better performance. I am
wondering whether this is due to a suboptimal configuration of SGD
(timeouts,...). Any idea how I could further track this down?
Possibly caused by SGD timeouts. More info here:
http://docs.sun.com/source/820-2550/launch_timeouts.html
Some other thoughts .. are your SGD application servers configured by IP
or hostname? I'm wondering if they're hostname, and the dns lookups are
taking a long time.
Outside of an SGD session, test from a command line on the SGD box
- nslookup <sgd-peer-hostname> [this is typically the name you set at
install time]
- nslookup <application-server>
- test making a connection to the app server (e.g. ssh/telnet, etc).
If the above results show slow DNS (I've seen this, and also
intermittent/flakey DNS responses) then try putting the DNS names into
the SGD server /etc/hosts and modifying nsswitch.conf so it reads "files
dns" i.e. reverse the order... then run the above tests.
Note the SGD install guides says DNS is a requirement and we always push
for this, but this alternative approach falls under the "unless you know
what you're doing" umbrella :)
Curtis.
--
Desktop Technical Specialist
Sun Microsystems
accessline: (310) 464-6289
internal: 41621
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