Re: [OpenSTA-users] IO Failed for VU 1-1 on connection 0/6 with error64:(The specified network name

[Bernie V. <Ber...@iP...>]

> I have been doing performance testing of a website, and when i try 100 
> VU's,
> i get error " IO Failed for VU 1-1 on connection 0/6 with error 64: ( The
> specified network name is no longer available, ).,
>

Rajendran,

I have encountered this error under two different situations. The first was 
when the system under test had two NICs. In that case, disabling one of the 
NICs cured the problem.

The other time it was related to a network bottleneck when running multiple 
OpenSTA boxes trying to emulate upwards of 3,000 virtual users. Each OpenSTA 
box (and the NIC on it) had adequate capacity but the sum of the network 
traffic saturated one of the routers. You really have to dig into the 
network configuration to be sure there is adequate capacity. You might try 
pinging the system under test from the OpenSTA server when the error 64 
occurs to see how the network is responding or if you get a similar error 
outside of OpenSTA.

Please post a reply if you solve this problem as it has been reported here a 
number of times and there is no clear cause or resolution that I am aware 
of.

-Bernie
(www.iPerformax.com)