Removed the layouts plugin and the location plugin and the problem resolved itself for now. Because its really late my time I haven’t had a chance to isolate whether one or both or none are causing the issue, but @angus@merefield giving you a heads up.
I didn’t have a chance to check the errors before I took down the plugins. And then today I rebuilt Discourse to 2.6.0.beta6 ( e7bad9f05d ). Problem went away.
Una pregunta básica, ¿cómo se sabe qué plugin está consumiendo cuánta CPU y memoria? htop solo muestra los unicorn workers pero no muchos recursos que utiliza cada plugin.