CP-52880: Avoid O(N^2) behaviour in Xapi_vdi.update_allowed_operations #6183
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Activate old xapi_vdi.update_allowed_operations optimization: get_internal_records_where does a linear scan currently, so operating on N VDIs is O(N^2). Look at the VBD records directly, like before this 2013 commit which regressed it: 5097475 (We are going to optimize get_record separately so it doesn't go through serialization) Signed-off-by: Edwin Török <[email protected]>
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Activate old xapi_vdi.update_allowed_operations optimization: get_internal_records_where does a linear scan currently, so operating on N VDIs is O(N^2).
Look at the VBD records directly, like before this 2013 commit which regressed it: 5097475
(We are going to optimize get_record separately so it doesn't go through serialization)
This still requires validation and measurements (e.g. using @contificate 's benchmark)