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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