Laurentiu,
I am cc-ing analytics@ public e-mail lists where you can direct this type of questions.
>for this goal we need time series of the http requests (pagecount, traces, and so on) the resolution of milliseconds.
This is really not super clear. I think you need to provide a more through description of the data you need.
For example, this describes internal data that we retain for ad most 90 days:
Given that you need ms resolution it is not likely we might have a dataset you can use but maybe someone on this list can point you to a released dataset that might be suitable.
Thanks,
Nuria