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jeff@xxxxxxxxxxx wrote:
>
> Hi...
>
> What is the best way to benchmark a LVS-NAT cluster?
there's two answers here
o just treat the cluster as if it were a single server and
run some test (this is what you've done). For n realservers
you hope to get n times the throughput of 1 realserver.
o there's no good tool for showing that the realservers
in an LVS are working together. For this reason I did
my tests on LVS performance
http://www.linuxvirtualserver.org/Joseph.Mack/performance/single_realserver_performance.html
with only 1 realserver.
The best tool I know for showing that a cluster is clustering is
polygraph
http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.performance.html#performance_testing_tools
although it is difficult to setup.
> Failed requests: 370
> (Connect: 0, Length: 370, Exceptions: 0)
I would not expect this and don't know what the problem is.
I don't know if the -v option will give you any info as to
the problem, but I think you'll have to be the one to go
find out more about what's going on.
Joe
--
Joseph Mack PhD, High Performance Computing & Scientific Visualization
SAIC, Supporting the EPA Research Triangle Park, NC 919-541-0007
Federal Contact - John B. Smith 919-541-1087 - smith.johnb@xxxxxxx
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