Thanks for the hints ! De : Chuck Hill <[email protected]> Date : Thu, 17 Mar 2011 10:11:59 -0700 À : Frédéric JECKER <[email protected]> Cc : WebObjects-Dev Mailing List List <[email protected]> Objet : Re: Ajax / DirectActions and performance issues
> Hi, > > On Mar 17, 2011, at 9:58 AM, Frédéric JECKER wrote: > >> Hi, >> >> We've rolled out a new feature in our app which includes an agenda >> (Jquery/FullCalendar). >> The data loading is done through Ajax queries/DirectAction/JsonResponse. >> Since then we are facing huge performance issues going from instance death to >> JVM crashes. >> We first added a few more instances and allocated more memory to each >> instance (600M) but we are still facing >> Those problems. >> >> User are displaying up to 8 or ten agendas at the same time (each agenda >> containing a lot of events), which corresponds to 8 ajax queries each time >> the user browses to the next week/day/month. But multiplied with the number >> of concurrent users (min. 50 concurrent users), this start to produce a huge >> number of queries. >> >> Googling a bit led me to the WOAllowsConcurrentRequestHandling and >> WOWorkerThreadCountMax parameters. >> I think that we could get a lot of benefits with those parameters. >> Are they working wit WO 5.3 ? >> Help / Feedback on massive ajax querying would be greatly appreciated ! > > You probably want a higher WOWorkerThreadCountMax than normal, set this in > JavaMonitor under Application Settings, Maximum Adaptor threads. I think the > default is 128 so that should be plenty high enough. > > Turning on WOAllowsConcurrentRequestHandling is always reccommended. You can > set this in JavaMonitor under Additional Arguments, as > -DWOAllowsConcurrentRequestHandling=true > > I don't know if that will fix your problem, but it should help. > > > Chuck > > -- > Chuck Hill Senior Consultant / VP Development > > Practical WebObjects - for developers who want to increase their overall > knowledge of WebObjects or who are trying to solve specific problems. > http://www.global-village.net/products/practical_webobjects > > > > > > >
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