[web2py] query performance

[LightOfMooN]

for i in range(1,10000):
    print db.rolic[i]

or

for i in range(1,1000):
    rolics = db(db.rolic).select(db.rolic.ALL, orderby=~db.rolic.rate)

It shuts down the server for 20 seconds
Is the problem in a big count of queries, or something else?