| From: | Gábriel Ákos <akos(dot)gabriel(at)i-logic(dot)hu> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | count(*) performance |
| Date: | 2006-03-27 13:34:32 |
| Message-ID: | 4427E9E8.9030806@i-logic.hu |
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| Lists: | pgsql-performance |
Hi,
I guess this is an age-old 100times answered question, but I didn't find
the answer to it yet (neither in the FAQ nor in the mailing list archives).
Question: I have a table with 2.5M rows. count(*) on this table is
running 4 minutes long. (dual opteron, 4gig ram, db on 4 disk raid10
array (sata, not scsi)) Is this normal? How could I make it run faster?
Maybe make it run faster for the 2nd time? Which parameters should I
change in postgresql.conf and how?
--
Üdvözlettel,
Gábriel Ákos
-=E-Mail :akos(dot)gabriel(at)i-logic(dot)hu|Web: http://www.i-logic.hu=-
-=Tel/fax:+3612367353 |Mobil:+36209278894 =-
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