Thanks for explanation guys! I wasn't aware of the clock. A single poll every 140s sounds perfectly reasonable to me. I'm not aware of any better alternatives for long polling, yet fortunately I don't desperately need one :)
Now I'm no longer concerned about Comet performance in my planned Liftweb app, thanks! Przemek On Apr 22, 5:41 pm, David Pollak <feeder.of.the.be...@gmail.com> wrote: > On Wed, Apr 22, 2009 at 12:53 AM, Alexander Kellett <lypa...@gmail.com>wrote: > > > > > are you sure this isn't the gc poll? > > It's not the GC ping > > > i agree 10 seconds is too short > > (thats a lot of traffic...) > > 10 seconds, as Marius pointed out, is the periodicity of the app because the > clock is updating every 10 seconds. This means that there's an update to a > comet component (the clock) every 10 seconds. > > > , but its a very quick operation, its not > > an actual poll on the page afaiu > > There's a very fast path in the code for the poll and it's all done over an > http keep-alive anyway. > > If there's anyone who has an idea better than long polling for server to > client push (other than HTML 5/WebSockets), I'm all ears. > > If the amount of traffic that long polling creates on your site because of > long polling exceeds your capacity (in my calculations, 100,000 active > sessions per dual core server machine), then you can remove the comet > component. > > Thanks, > > David > > > > > > > On Wed, Apr 22, 2009 at 8:54 AM, przemek.pokrywka > > <przemyslaw.pokry...@gmail.com> wrote: > > > > It is 10 sec actually at Comet chat example. > > > Not very good for high-traffic public portals. > > > > Przemek > > > > On Apr 21, 7:21 pm, "marius d." <marius.dan...@gmail.com> wrote: > > >> But what is the problem with long pooling if a request is done every x > > >> minutes (if server does not have any message for this client)? > > -- > Lift, the simply functional web frameworkhttp://liftweb.net > Beginning Scalahttp://www.apress.com/book/view/1430219890 > Follow me:http://twitter.com/dpp > Git some:http://github.com/dpp --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Lift" group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~----------~----~----~----~------~----~------~--~---
