searching archives should be a weeeee bit faster ... - Mailing list pgsql-general

I spent this aft enabling debugging on the postmaster side, and determined
that there was a critical index missing on one of the tables ... there was
no index on the url.rec_id field, so a query that looks like:

SELECT rec_id, site_id, pop_rank FROM url WHERE rec_id IN

('31356','31364','32786','32787','32857','32858','32871','32872','32873','32874','32877','32878','32891','32892','32894','32922','32923','32928','32929','33003','33004','33030','33090','33091','35

146','37026','37028','39730','44317','44339','44348','44359','44413','44420','44438','45314','45322','45861','47914','48756','49587','50564','50567','51222','52330','53029','53550','53581','53898'

,'53901','53932','54235','54944','54951','54955','54965','54973','55041','55295','55370','55374','55609','55885','55889','55898','55903','55905','55906','55907','56442','57144','57228','57230','57

233','58497','58499','58512','58519','58540','58581','58585','59281','59865','59874','60476','60478','60482','60486','60590','60827','61465','61531','61778','62272','62585','62602','62609','62731'

,'63933','66733','66740','66743','66747','66758','66760','66763','66765','66768','66774','66777','68100','68191','68195','68212','68213','68257','68266','68288','68295','68300','68315','68332','68

335','68349','68354','69422','69435','69446','69447','69987','69991','69995','70003','70007','70010','70084','70089','70095','70468','70692','70699','70739','71022','74531','74810','77576','77736'

,'78346','78608','79208','79291','79312','79349','80034','80038','82203','82852','84155','84456','85945','86709','87055','87061','87065','87078','87406','87413','87518','89229','89740','91262','94

205','94209','94215','94217','94940','96242','96295','96303','97442','97827','97833','97854','98262','98845','98846','98847','98848','98849','98850','98851','98852','98854','98855','98856','98857'

,'98858','98859','98860','99239','100360','100407','100459','100731','100840','102020','102026','103782','106017','108523','109645','109654','109667','109670','111213','111232','111233','111349','

111351','111356','111620','116673','116677','116734','117709','117733','118075','118103','122444','126754','127945','127949','128132','131062','131066','131067','131068','131079','131084','131085'

,'131094','131221','131222','131223','131225','131226','131227','134426','135465','135466','135468','135470','137034','137035','137536','142057')
ORDERBY rec_id; 

was doing a sequence scan over 230k+ records in the URL file each time ...
created the index, and now I can actually get results ~32sec for the
single string (mvcc) that I've been using for testing, instead of it never
seeming to come back ...

hopefully that was the major part of it ...