Re: Patch for 'Not to stuff everything as files in a single directory, hash dirs''
От | Bruce Momjian |
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Тема | Re: Patch for 'Not to stuff everything as files in a single directory, hash dirs'' |
Дата | |
Msg-id | 200010030344.XAA11495@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Patch for 'Not to stuff everything as files in a single directory, hash dirs'' (JanWieck@t-online.de (Jan Wieck)) |
Список | pgsql-hackers |
My idea was to implement the large object API on top of TOAST. > Bruce Momjian wrote: > > Seems the whole large object per file is going away in 7.1. Can someone > > confirm this? > > Not the whole one in 7.1. > > The TOAST stuff will lower the need for large objects alot, > but we already discovered the fact that it isn't a real > answer to LARGE objects. > > First of all, the entire datum must be properly quoted to fit > into a querystring. Therefore the client needs to have the > original datum, the qouted copy, the querystring it built. > Then the querystring is sent to the backend, parsed (where a > CONST node is built from it), copied into a tuple to be split > up into TOAST items. > > So on a central system, where client and DB are both running, > we have 6 copies of the object in memory! Not that optimal. > > For 7.2 I'll work on real CLOB and BLOB data types. Requires > some more thinking though. > > > Jan > > -- > > #======================================================================# > # It's easier to get forgiveness for being wrong than for being right. # > # Let's break this rule - forgive me. # > #================================================== JanWieck@Yahoo.com # > > > -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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