From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Jan Wieck <JanWieck(at)Yahoo(dot)com>, Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, "Ross J(dot) Reedstrom" <reedstrm(at)rice(dot)edu> |
Subject: | Re: Big 7.1 open items |
Date: | 2000-06-18 22:50:17 |
Message-ID: | 200006182250.SAA13436@candle.pha.pa.us |
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Lists: | pgsql-hackers pgsql-patches |
If we eliminate the round-robin idea, what did people think of the rest
of the ideas?
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > ... We could even get fancy and
> > round-robin through all the extents directories, looping around to the
> > beginning when we run out of them. That sounds nice.
>
> That sounds horrible. There's no way to tell which extent directory
> extent N goes into except by scanning the location directory to find
> out how many extent subdirectories there are (so that you can compute
> N modulo number-of-directories). Do you want to pay that price on every
> file open?
--
Bruce Momjian | http://www.op.net/~candle
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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