That is to be expected. In order to provide the most resilliency, Tableau has separated out different items into their own service so that if one process gets hung up or killed, it doesn't effect the others. As far as resource consumption, what does your config look like? Can you send a screenshot of your node setup? Also, what does your CPU and Ram specs look like?
It could be kind of expected, VizQL can use a lot of memory depending of the traffic.
1. How much memory / RAM do you have in total on that host ?
2. How much users used Tableau Server ?
3. If there is an Antivirus installed on this host, is Tableau Server white listed ?
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It appears you only have 12GB RAM or 16GB? While that will work for a test server with little to no users using the server, you will need to bump up to 64GB RAM if you are using the 2019.2 thru 2019.4 releases. We have way more services and micro-services running with 2019.x releases. We changed from 16GB minimum to 32GB in early 2019 then changed to 64GB RAM with 2019.4. I am recommending 128GB RAM to my customers that need better performance.
Recall we added in 2019 Ask Data, Explain Data, Data Catalog, Data Lineage, Encrypted Extracts etc. These all consume RAM.
The more RAM you give Tableau Server the better things get!!! (it's true)