Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 3110337C272 for ; Tue, 7 Oct 2008 17:21:55 -0300 (ADT) Received: from postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 13044-04 for ; Tue, 7 Oct 2008 17:21:49 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.175]) by postgresql.org (Postfix) with ESMTP id 6EA9437C250 for ; Tue, 7 Oct 2008 17:21:49 -0300 (ADT) Received: by ug-out-1314.google.com with SMTP id 29so360404ugo.7 for ; Tue, 07 Oct 2008 13:21:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type; bh=AZzQCOrFW5wo33EE9vIsa3ZAGTsIqPHCfiwQ8qu/6YI=; b=ndVxIvTzK9nEv9kCLO3ss9HoIpaceFHEEKK/xjD1wZ/TpzIu27xgw4xUEL2n7Fq4zW gqcfFej6cY4kKLfaPTlORYCNwT9OvoErIeSdQJqD8p8RX1YObHTVJEytZ607oAwEVoXr lQWuPXRhfUMYNmxplBiu/7PUGLBvg4sQJMVaA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=UZEyZ8Yaf74Fk1DMhN+UsNLXh3muwgA7qLRzVvXNR8hdbkHXuNleVR2XRzTDw3WMTt ycZ4PMKCsu502ixTqvKpD0B0CrbHuj2oqnlZoe/yUfnVSWAG/1/LZIzgZ6S+fJ2PTewo VPK1juAzs6A/M/PULR6SA6kwWxjnLL+99j3VQ= Received: by 10.86.71.1 with SMTP id t1mr6646628fga.36.1223410907518; Tue, 07 Oct 2008 13:21:47 -0700 (PDT) Received: by 10.86.71.17 with HTTP; Tue, 7 Oct 2008 13:21:47 -0700 (PDT) Message-ID: <3a0028490810071321j32b4f450m95123d02b9fe6f49@mail.gmail.com> Date: Tue, 7 Oct 2008 18:21:47 -0200 From: "Rafael Domiciano" To: "pgsql-admin@postgresql.org" Subject: checkpoint_timeout MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1875_20318864.1223410907503" X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.001 tagged_above=0 required=5 tests=HTML_MESSAGE=0.001 X-Spam-Level: X-Archive-Number: 200810/42 X-Sequence-Number: 30498 ------=_Part_1875_20318864.1223410907503 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hello there, I'm having some slowndowns in my postgresql server, and I had been reading something about checkpoints, that could resolve my problem. Now, I have: checkpoint_segments = 30 # in logfile segments, min 1, 16MB each #checkpoint_timeout = 5min And I percebed that this slowndown is occuring for 5 min...! So I'm suposing that the problem is in the checkpoint_timeout. What's the impact to chang it to: checkpoint_timeout = 2min or checkpoint_timeout = 5min Tnhks, Rafael Domiciano ------=_Part_1875_20318864.1223410907503 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline
Hello there,

I'm having some slowndowns in my postgresql server, and I had been reading something about checkpoints, that could resolve my problem.
Now, I have:
checkpoint_segments = 30                # in logfile segments, min 1, 16MB each
#checkpoint_timeout = 5min 

And I percebed that this slowndown is occuring for 5 min...! So I'm suposing that the problem is in the checkpoint_timeout.

What's the impact to chang it to:
checkpoint_timeout = 2min or
checkpoint_timeout = 5min

Tnhks,

Rafael Domiciano
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