What's the purpose of warmup in search_disk_index? #7
Description
Hello, after reading the search_disk_index.cpp, I find that the macro WARMUP is true by default, that means after loading the hot data into cache, it will do the same search process called warmup again, which seems meaningless because in function cached_beam_search, there is no cache update operation. It seems that the process of generate_cache_list_from_sample_queries has already warmed the system up.