Fix #7365: Optimize calculation of prefix utilization #7366
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Fixes: #7365
By profiling the python interpreter, I found
Prefix.get_utilization()inipam/models/ip.pyconsumes a lot of time.Especially,
IPSet.add()in a loop is the biggest bottle-neck.https://github.com/netbox-community/netbox/blob/develop/netbox/ipam/models/ip.py#L491
In my experiment, instead of
IPset.add(),IPSet()constructor could reduces the execution time.IPSet()also can dedup IPs and IP ranges.Five times quick experiments results (unit: second):