| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | t-ishii(at)sra(dot)co(dot)jp |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgreSQL(dot)org |
| Subject: | Re: [HACKERS] sort on huge table |
| Date: | 1999-11-30 02:02:40 |
| Message-ID: | 199911300202.VAA21215@candle.pha.pa.us |
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| Thread: | |
| Lists: | pgsql-hackers |
Was this resolved?
> >That's what I get for not testing the interaction between logtape.c
> >and buffile.c at a segment boundary --- it didn't work, of course :-(.
> >I rebuilt with a small RELSEG_SIZE and debugged it. I'm still concerned
> >about possible integer overflow problems, so please update and try again
> >with a large file.
>
> It worked with 2GB+ table but was much slower than before.
>
> Before(with 8MB sort memory): 22 minutes
>
> After(with 8MB sort memory): 1 hour and 5 minutes
> After(with 80MB sort memory): 42 minutes.
> --
> Tatsuo Ishii
>
> ************
>
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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