I ping 5000+ nodes per day, using Net::Ping and the threads module on Win32. Works like a charm. Here is a snippet of code: 
use strict;
use threads;
use Thread::Queue;
use Net::Ping;

my $ThreadCount = 6;
my @Threads;
my $ServerQueue = Thread::Queue->new;

# my @Servers = whatever
foreach my $Item (@Servers) { 
    $ServerQueue->enqueue($Item);
}

for (1..$ThreadCount) {
    my $Thread = threads->new(\&Process, $ServerQueue);
    push (@Threads, $Thread);
}

foreach my $Thread (@Threads) {
    $Thread->join();
}

sub Process {
    my $ServerQueue = shift;
    my $pingobj = Net::Ping->new("icmp",5,64);

    while (1) {
        my $Server = $ServerQueue->dequeue_nb();
        last if (! $Server);

        if ($pingobj->ping($Server)) {
            #ping was good
        } else {
            #ping was bad
        }
    }
}

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In reply to Re: Non-blocking pings on Win32 by meetraz
in thread Non-blocking pings on Win32 by TheFluffyOne

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