On Sat, Feb 18, 2012 at 4:02 AM, Francis J. Lacoste <francis.laco...@canonical.com> wrote: > On 12-02-16 07:45 PM, Robert Collins wrote: >> On Fri, Feb 17, 2012 at 1:13 PM, Ian Booth <ian.bo...@canonical.com> wrote: >>> We've spent time developing it and it provides very much wanted >>> functionality. I do hope that "disable" doesn't mean turn it off and >>> delete in a few months once everyone forgets about it. There's already a >>> large sunk cost in getting it this far, how much work is required to get >>> it over the line? Is that something the maintenance squad could pick up? >> >> The LEP links to the bugs, you can have a read and make an assessment. >> > > I can't find the LEP, but my recollection is that there is only one big > problem which is user self-inflicted and thus could probably be marked > Won't fix.
https://dev.launchpad.net/LEP/NotificationService There are three criticals, none of which is user inflicted, there are a number of highs, one of which we may be able to downgrade sensibly. > https://bugs.launchpad.net/launchpad/+bug/906482 > > The root issue is that any longpolling from JS makes it easy to get in > the per-host (or even total) browser connection limits as each tab you > have open has a long-standing open connection with the server. > > For example, Firefox maximum connection limits is 24. So after opening > 24 tabs with a longpoll connection, the web should fail permenently for > you, until you free those up. It is much worse than that. The relevant key is network.http.max-persistent-connections-per-server - which defaults to 6. 6 tabs that do long poll of any sort, and your browser hangs on that domain. > So either we accept that users won't be able to open multiple tabs > anymore, or we drop the whole longpoll concepts altogether. Not at all: there are solutions to the issue (note that the wildcard approach just defers the problem - there is as you note a maximum connection limit as well, and we don't want to reach that - OTOH we don't need to aim for perfection). We should study what heavy ajax apps like twitter, facebook and gmail do. But - we need to either do, or not do, this project :) -Rob _______________________________________________ Mailing list: https://launchpad.net/~launchpad-dev Post to : launchpad-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~launchpad-dev More help : https://help.launchpad.net/ListHelp
