[concurrency-interest] Creating a Set of pings

Tim Peierls tim at peierls.net
Mon May 29 17:09:48 EDT 2006

Maybe the approach you are using just doesn't scale very well? There may be
inherent resource limitations on the use of InetAddress.isReachable, etc.
that dominate everything else. If that's the case, it doesn't matter how
carefully or cleverly you code the thread pool usage; you're still bound by
those limitations.

I'm way out of my depth here, but maybe java.nio.channels.Selector could be


On 5/29/06, robert lazarski <robertlazarski at gmail.com> wrote:
> The code I posted in my last post got mangled - sorry about that, I'm
> going to try again. The issues I still have are that the performance of 25
> seconds on a class c subnet seems slow, and on bigger subnets I get "
> java.net.ConnectException: No buffer space available" after around 1000
> InetAddress.isReachable() calls. Any further help highly appreciated,
> thanks!
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