On 12/14/2016 10:27 AM, Esteban A. Maringolo wrote:
Memory is cheap, and the only limit now is CPU, the current Pharo image has an idle CPU consumption ~5%, so you can't have many concurrent images running in the same machine.
Sure you can, a multi-core server isn't going to get maxed out by idle CPU consumption as each image will only do that on a single core; you can also reduce consumption on headless images by suspending the UI process which isn't needed getting you down to perhaps 2-3%.
whilst 10 idle Pharo images will consume 50%.
Only on a single CPU machine which isn't what you're going to have on a server. Running two images per core on a 12 core virtual server and you'll be sitting more like 5-6% idle which is totally fine. Spread that across 10 or 15 virtual servers and you can handle 1000 concurrent users just fine.
-- Ramon Leon
