I found out that webserver response times are typically modeled as coming from a lognormal distribution here. What I don't quite get is why this is the case!
In particular, Wikipedia states that a random variable X is distributed lognormally when it is the product of several independent normal variables.
In that case, what would these individual normal variables represent in the execution time of server code?
I haven't managed to find any sources that discuss why the lognormal distribution is a good fit for webserver response times.
Not sure if this question would be best asked on stackoverflow or math.stackexchange but thought I'd try here.
Thanks for any insight!