Under this configuration, when the container consumes memory more than 200M and less than 500M, the next system memory reclaim attempts to shrink container memory below 200M.
But what does this actually mean?
Let's say I have a container running Solr, and:
docker run -m 1G --memory-reservation 768M solr
What effect does it have on the Solr process inside the container when it starts using 800M memory? Nothing?
Is it only if/when memory usage subsequently drops below 768M... this flag allows docker to reclaim the memory from the solr container? ...otherwise the container would continue to consume whatever the high-water memory usage was?
How does this relate to swarm scheduling? If swarm always allocates 1G for the container because of
-m then is
--memory-reservation not useful in this context?