Re: [HACKERS] Postgres Speed or lack thereof
Roberto João Lopes Garcia <roberto@mha.com.br>
From: Roberto Joao Lopes Garcia <roberto@mha.com.br>
To: John Holland <jholland@isr.umd.edu>
Cc: pgsql-hackers@postgreSQL.org
Date: 1999-01-19T15:43:43Z
Lists: pgsql-hackers
At 11:29 19/01/99 -0500, you wrote: >can you explain the -F flag? when is it passed to what? Can this be done >in plpgsql? how? Or passed by libpq in a C program that needs to insert (as fast as possible) a lot of new rows? > > >john >On >Mon, 18 Jan 1999, Tom Lane wrote: > >> Vadim Mikheev <vadim@krs.ru> writes: >> > For the table with single int4 column & 2000 INSERTs I have: >> >> > BEGIN/END: 3.5sec ~600insert/sec >> > Without: 151sec ~13insert/sec >> >> > (IDE disk!) >> >> > I guess that you don't use -F flag..? >> >> *Do* use -F, you meant of course. You're right, I do. With an >> fsync after every transaction, I'm sure my test would've been much >> slower. >> >> However, with a UPS and an OS that only crashes about once every >> other year, I feel pretty secure using -F ... >> >> regards, tom lane >> > > > > ------------------------------------------------------------------ Eng. Roberto João Lopes Garcia E-mail: roberto@mha.com.br F. 55 11 848 9906 FAX 55 11 848 9955 MHA Engenharia Ltda E-mail: mha@mha.com.br WWW: http://www.mha.com.br Av Maria Coelho Aguiar, 215 Bloco D 2 Andar Centro Empresarial de Sao Paulo Sao Paulo - BRASIL - 05805 000 -------------------------------------------------------------------