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- ALM used Azure DevOps
- CI system used Azure DevOps
- Languages of the repository c#
- Error observed
When running the scanner on a hosted build agent in Azure I observe that loading/download of plugins are really slow
User cache: /home/vsts/.sonar/cache
INFO: Load/download plugins
INFO: Load plugins index
INFO: Load plugins index (done) | time=74ms
INFO: Load/download plugins (done) | time=23846ms
INFO: Loaded core extensions: developer-scanner
INFO: Found an active CI vendor: 'Azure DevOps'
What can be done to make this run faster.
Unfortunately – there’s not much that can be done. ~250 MB of analyzer data needs to be downloaded and there’s no reliable caching mechanism that can be used on Azure DevOps Pipelines like is available on some other CIs.
I have two points to share:
- We know downloads take longer when the version of Java used to run the scanner is 14+ (as Pack200 compression is no longer supported). It’s something worth double-checking, although your scanner environment is most likely on Java 11.
- Eventually, we would like to do get these resources hosted on a CDN to improve availability. We aren’t there today
Just to have some numbers – how long does the rest of your build/analysis take? We know this is uniquely painful on smaller projects with otherwise short builds.
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