I migrated my website to a new server recently.
The server administrator mentioned that the website uses a large amount of memory.
I didn't have FTP access at the time, so on my test server version (the original before migration) which was still active, I ran memory_get_usage() in my template to output it to the page. This outputted a value equal to about 27.5M, which is within regulations.
In the meantime, I went through the live version and disabled any modules that I didn't need (installed a few during development that I no longer need) and turned off 'Rebuild Theme Registry on Page Load', but the live server admin still reported it being too high.
After acquiring FTP Access, I copied the memory_get_usage() onto the live version. This now reports 40M.
So the test version is 27.5M and the live version is 40M with a considerable degree less modules and without rebuilding the theme registry.
What could cause this?
I've gone through the website and disabled all modules that are unused, then deleted them from the FTP. Set up caching for anonymous users, then cleared the cache, turned off rebuild theme registry. Opted to optimise and aggregate scripts and I'm still running at 36M on the live server and 27.5M on the test server. Can anybody help?