???MySQL?????????3?????
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MySQL????????????????????????????????????????????????????????????????Щ??????????£?
?????????????????(key_buffer)
?????????????????????????????????(??/д????)???á?MySQL??????????????????????????????????????????????????????????25%???С?????????????????MySQL????????????????????????????????????????????????????? key_buffer_size????????????
?????(read_buffer_size)
???????????????????????MySQL??????????????滺??????read_buffer_size????????????????????С???????????????????е???????????????????????????滺??????С??????????
?趨????????????(table_cache)
?????????MySQL???κ?????????????????????????????????????????????????max_connections????????????????table_cache????MySQL???????????????max_connections?????????????????????????????????????????????????????????????С??
?????????趨??????????(long_query_time)
MySQL???С???????????????????????????е??????????????Χ????δ?????????????????????????Щ??Ч??????????????????????????????????á?long_query_time????????????????????????????λ??
?????????????????????????SQL???????????????÷????????????????ó????????
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