I have recently upgraded to a virtual private server. What is a safe speed for googlebot to crawl my website.

Can you please give me results in the format of:

xxx requests per second

xxx seconds between requests

Thanks!!

How fast can your database recover from a query?
How quickly can your server serve a page?
How many pages per second can your server deliver?
What's the data access speed of the server hard drive?
What's the latency of network requests from the data centre gateway to your server?

I would keep the crawl rate at the default setting