Received: from maia.hub.org (unknown [200.46.204.183]) by mail.postgresql.org (Postfix) with ESMTP id CA90763296D for ; Sun, 1 Nov 2009 14:27:22 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 42990-03 for ; Sun, 1 Nov 2009 18:27:14 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-yx0-f181.google.com (mail-yx0-f181.google.com [209.85.210.181]) by mail.postgresql.org (Postfix) with ESMTP id 66C6B6327E0 for ; Sun, 1 Nov 2009 14:27:14 -0400 (AST) Received: by yxe11 with SMTP id 11so3785414yxe.15 for ; Sun, 01 Nov 2009 10:27:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=4AZU1L3OGJTPc371Iu9dlRRV38JNF+Y6FDkMh1nylzw=; b=JZ7Ds3/PdpZK799HcH7G5OyUZ3pvGRFL2ftU5M9c6EzXYf3L2RqFwGMUEVuylbfTAm 9HVJY19ZJ3lPLWwKR1GYEM9sasYGPR99r8MoV/8v6d0R4x8XHBTmoLeaytq7cf4l/37H u7TX/AQmU4nkzHxvB+w2qOG1Ejvw0LV0FlZgc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=rFAYMF2F4lLAyWsviIezah9zY3g2pwbW6rQqeOKa5tABvOG+3Tk2DS3kAI/wITAnqg i8MeKPFQYjwsWmus0NK1J1tKU6NQ1fOjOmQc3jdt07a7SfX6aoZmKYpwf9sZ/hoWJFLI qo8RS6Kd8haSrH6PU+Sl1yxW3KKM9VUE0Lo7I= MIME-Version: 1.0 Received: by 10.101.133.29 with SMTP id k29mr2587186ann.98.1257100033470; Sun, 01 Nov 2009 10:27:13 -0800 (PST) In-Reply-To: <234efe30911010853k1908b6a6kdb1ebcdbc4c22691@mail.gmail.com> References: <234efe30911010651k6cf3d398t9d61e560d57b52b7@mail.gmail.com> <162867790911010656m37b315dbp41761a014745b9e4@mail.gmail.com> <234efe30911010853k1908b6a6kdb1ebcdbc4c22691@mail.gmail.com> Date: Sun, 1 Nov 2009 11:27:13 -0700 Message-ID: Subject: Re: Compression in PG From: Scott Marlowe To: Shaul Dar Cc: Pavel Stehule , pgsql-performance@postgresql.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.11 tagged_above=-10 required=5 tests=BAYES_05=-1.11 X-Spam-Level: X-Archive-Number: 200911/7 X-Sequence-Number: 36175 On Sun, Nov 1, 2009 at 9:53 AM, Shaul Dar wrote: > Guys, > > I am aware of the TOAST mechanism (actually complained about it in this > forum...). The text fields I have are below the limits that trigger this > mechanism, and also I may want to compress specific fields, not all of them. > And also I have performance concerns as TOAST splits tables and can > potentially cause a performance hit on queries. Did you even read the link posted?