ArcGIS - MapViewer is really slow

At one of my client, we are using a lot of GIS related functionality. There are a lot of GIS related products out there, but we are using the ArcGIS JavaScripts Maps SDK from ESRI.

We are quite happy with the product and the feature it has to offer. However last week we got the feedback that the MapViewer we had integrated in our applications was quite slow when running in a virtual machine.

We could easily reproduce the issue by browsing to the example page from ArcGIS MapViewer:

We noticed that not only the map itself was loaded quite slowly, any other activity(zooming, scrolling, …) was also with a noticeable delay.

When we looked at the browser console, we noticed the following warnings:

Especially the following warning captured our interest:

[.WebGL-000026F40027F100]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels

As we are running in a Virtual Machine it looks like Chrome didn’t want to use GPU acceleration. Luckily we can force Chrome to still use GPU acceleration by ignoring the GPU blocklist.

Therefor go to chrome://flags/#ignore-gpu-blocklist and toggle the value to Enabled:

Click on Relaunch to apply the changes.

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t

DevToys–A swiss army knife for developers

As a developer there are a lot of small tasks you need to do as part of your coding, debugging and testing activities. DevToys is an offline windows app that tries to help you with these tasks. Instead of using different websites you get a fully offline experience offering help for a large list of tasks. Many tools are available. Here is the current list: Converters JSON <> YAML Timestamp Number Base Cron Parser Encoders / Decoders HTML URL Base64 Text & Image GZip JWT Decoder Formatters JSON SQL XML Generators Hash (MD5, SHA1, SHA256, SHA512) UUID 1 and 4 Lorem Ipsum Checksum Text Escape / Unescape Inspector & Case Converter Regex Tester Text Comparer XML Validator Markdown Preview Graphic Color B

The art of simplicity

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