Re: Postgres performance on Veritas VxVM

From: River Tarnell <river(at)loreley(dot)flyingparchment(dot)org(dot)uk>
To: Greg Smith <greg(at)2ndquadrant(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Postgres performance on Veritas VxVM
Date: 2009-12-02 16:29:49
Message-ID: 20091202162949.GA21325@loreley.flyingparchment.org.uk
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Greg Smith:
> What you should do is the following:

> postgresql.conf: wal_sync_method = open_datasync
> /sql/pg_xlog: 'noatime,cio,mincache=direct,convosync=direct

> That should work quite well.

Thanks. That reduced the import time to about 4hr 30 minutes. However,
this is still much slower than using VxFS with plain disks. Any other
ideas?

I'm now running a test using VxFS on SVM soft partitions to see if that
improves performance at all (but I'd much rather have the flexibility of
VxVM).

- river.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (HP-UX)

iEYEARECAAYFAksWlf0ACgkQIXd7fCuc5vLDQQCghI3Dm8/GRuDVOucrYlQoq5jS
sk0AoLR0SJyt+aK7k1F+iTEQ/t3Qto+U
=y3ed
-----END PGP SIGNATURE-----

In response to

Responses

Browse pgsql-general by date

  From Date Subject
Next Message Tony Cebzanov 2009-12-02 16:33:29 Undefined subroutine &main::spi_prepare
Previous Message Le-shin Wu 2009-12-02 16:25:03 Re: import data from openoffice Calc