[galaxy-dev] Recommended Hardware for Galaxy

Dear all, In our Center for Medical Research we installed Galaxy server for our researchers. We are running Galaxy on login node (Virtual Machine) and job execution is on cluster configured using SLURM. In Galaxy configuration we are using Supervisor-uWSGI-Nginx and two handlers. We are facing low performance problem and very slow Galaxy response. Our Virtual Machine has 4 cores and 16GB of RAM memory. Is there any recommended hardware configuration for Galaxy? Thanks in advance, Marija