After some trial and error, as well as trying every alternative I could find, I've written a new SNMP module that allows for fast asynchronous polling of multiple objects across thousands of nodes.

My tests across 1000 nodes at my employer's network have so far been *very* successful! The usage example completes one round of polling of these nodes in under 30 seconds, with about 25% CPU utilization. If I increase the InFlight parameter to 50, it completes in under 20 seconds with 37% CPU!

At this time, the module is the bare-minimum necessary for my needs, but I believe it has the potential for much, much more. I won't go into the details here of why I've written my own but suffice to say that nothing had the right combination of features, stability, and speed that I needed.

The code makes heavy use of closures, and I'm fairly new to the concept. It depends on the net-snmp libraries, and the SNMP module that comes with them.

IMPORTANT -- in order for this to work, you must be using the SNMP module from net-snmp release version 5.3.2 or the latest version from CVS trunk. The release version 5.4.1 (as well as the versions from CPAN) has a bug in the XS code that leads to a core-dump when running too many asynchronous queries in parallel.

What I want now

I'm posting this to the monastery in hopes that the knowledge of the Monks can help me make further improvemens, and find and fix bugs and any sub-optimal design decisions. This includes:
This is not YET in production, but it will be within a few weeks - or less. The code is attached below...

UPDATE: I've posted a new version of the code here. The code in this node should now be considered obsolete. The new code is slightly faster, more robust, and *much* more scalable. It also has new features.

The old code is still here, but is now hidden with spoiler tags.
<Reveal this spoiler or all in this thread>
I welcome any and all comments and criticism!

In reply to RFC: A module for SNMP polling of thousands of nodes simultaneously by Hercynium

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