Hello I'm running Solr as an AWS Fargate task. The Fargate task has 8GB memory to its availability.
The Solr process has Xms=512 and Xmx=2048. The remaining memory should go to MMapDirectory for index caching. Solr reports a memory usage of nearly 100%. This, I believe, is good as that indicates full memory utilization by MMapDirectory. However, AWS Fargate reports that only ~22% of the task's available memory is used. This percentage "nearly" aligns with the Xmx set for the container, but not the full memory expected usage. I'm curious why Solr and AWS disagrees on the memory usage. It seems that AWS only reports the direct memory usage of the container process (being Solr), but I'm not sure. Does anyone know which system metric Solr takes the *Physical Memory* from, as shown in the top bar of the below picture? Kind regards, Stian Brattland *Solr :* [image: image.png] *AWS : * [image: image.png]
