Hi all, I've just got a report from a customer that they tried to upgrade to 2.22.0, but had to quickly revert back to 2.21.x, as the GeoServer home page was unreachable.
What is interesting about that deployment is the number of layer, well above 20k. Not the largest I've seen, but large. Also, all the layers are sourced from an Oracle database. In their case, the home page takes several minutes to load. Locally I have an oddball test data directory with 40k layers, but with an easing factor, it's a "many times copy" of the GeoServer demo layers, meaning it's all shapefiles. The landing page for me displays quick enough (few seconds), but then the browser is on its knees, completely unresponsive, for 10+ seconds. After that, trying to use the workspace/layer dropdown also incurs in severe slowdown, with the browser blocked for several seconds. Chrome reports that one tab with the home page is using 776MB of memory, too. Considering I've seen installations with up to 1 million layers (a case where they actually had 3 millions, and split them across 3 different data directories), this is a serious problem... I have also seen Gabriel experiment with large geoserver-cloud deployments with a lot of workspaces (tens of thousands? more?) but I cannot find the relevant branch anymore (believe it was about better parallelizing data directory loading, cannot find the commit anymore). How to address it though? Throwing in a couple of ideas: - Make the functionality opt-in or opt-out via a flag or UI configuration. The flag might be hard to discover, but the UI setting could be hard to reach if one cannot get to the home page to start with... - Automatically disable the dropdowns after a certain threshold of workspaces layers is reached, with the threshold being configurable? Say 1000 for example? However it might still cause issues for data sources that are slow to be connected (I'm guessing part of the slowness is due to some data type verification that requires actual connection to the data source, based on the fact the Oracle seems a lot slower to just generate the page Any other idea? Cheers Andrea == GeoServer Professional Services from the experts! Visit http://bit.ly/gs-services-us for more information. == Ing. Andrea Aime @geowolf Technical Lead GeoSolutions Group phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549 https://www.geosolutionsgroup.com/ http://twitter.com/geosolutions_it ------------------------------------------------------- Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa che ogni circostanza inerente alla presente email (il suo contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei comunque grato se potesse darmene notizia. This email is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. We remind that - as provided by European Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or the information herein by anyone other than the intended recipient is prohibited. If you have received this email by mistake, please notify us immediately by telephone or e-mail
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