How many req per second can a single mongrel server handle of RoR app.
oldgregg: Maybe not the best place to post this... but it depends on how long each request takes. If it's 100ms/avg then a single mongrel thread can do ~10req/sec. Mongrels are single-threaded which is why you usually see 5+ instances. If you are caching so it hits apache and not the mongrel than potentially much higher. If you can switch to nginx passenger though, do it. Much faster and cleaner.