Adjust memory resources
In #1145 (closed) (!843 (merged)) I removed all CPU limits as discussed in #1140 (closed). We need to tweak at least those which we often get OOM kills for (#1178 (closed), #1167 (closed)).
However, I'm still unsure how to properly adjust the mem limits/resources, see @arie's point at #1140 (comment 37217)