Hey Travis, I just went through your article, worked through your code, tinkered. Great job. I'm learning Clojure now and these are definitely the types of articles that make it a lot easier to see how to work with all of the concurrency mechanisms that the language provides.
- Jeremy On Wed, Jul 22, 2009 at 7:56 PM, tmountain <tinymount...@gmail.com> wrote: > > I've written a short blog post on using Clojure to search for > available ssh servers on my companies VPN. It starts with a single- > threaded example and then adds concurrency. The performance difference > in this case was pretty extreme. Sweeping 254 hosts in a serial single- > threaded fashion took twelve minutes with a network timeout of five > seconds per host. Adding concurrency resulted in a full sweep in six > seconds. If nothing else, I guess this is a good illustration of what > a huge win concurrency can performance wise. > > I initially tried to use pmap to parallelize the connections, but it > didn't provide any improvement (maybe I did it wrong?). I opted to use > agents with send-off because the documentation specifically mentions > that send-off is intended for situations where the applied function > might block. Anyway, I welcome suggestions as I'm still learning. The > article can be found here: > > > http://travis-whitton.blogspot.com/2009/07/network-sweeping-with-clojure.html > > Thanks, > Travis > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
