Re: a tiny question
От | Luis Alberto Amigo Navarro |
---|---|
Тема | Re: a tiny question |
Дата | |
Msg-id | 00ba01c284e5$437e19b0$cab990c1@atc.unican.es обсуждение исходный текст |
Ответ на | a tiny question ("Luis Alberto Amigo Navarro" <lamigo@atc.unican.es>) |
Список | pgsql-hackers |
a guess it's said inter-locking, I mean data accessed exclusively. I apologize for my english ----- Original Message ----- From: "Neil Conway" <neilc@samurai.com> To: "Luis Alberto Amigo Navarro" <lamigo@atc.unican.es> Cc: <pgsql-hackers@postgresql.org> Sent: Tuesday, November 05, 2002 4:47 PM Subject: Re: [HACKERS] a tiny question > "Luis Alberto Amigo Navarro" <lamigo@atc.unican.es> writes: > > When we improve seq scans, systems scales well up to 8 cpus.When we improve index > > scan, query performance increase but system stops scaling at about 4 proccessors, > > profiling shows that it is due to increased memory contention > > What do you mean by "memory contention"? > > Cheers, > > Neil > > -- > Neil Conway <neilc@samurai.com> || PGP Key ID: DB3C29FC > > > ---------------------------(end of broadcast)--------------------------- > TIP 6: Have you searched our list archives? > > http://archives.postgresql.org > >
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