Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 22FAE2E308B; Fri, 7 Dec 2007 16:16:12 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 94283-02; Fri, 7 Dec 2007 16:16:07 -0400 (AST) Received: from mail.skype.net (mail.skype.net [193.88.6.4]) by postgresql.org (Postfix) with ESMTP id 921922E307A; Fri, 7 Dec 2007 16:16:07 -0400 (AST) Received: from mail.skype.net (localhost [127.0.0.1]) by mail.skype.net (Postfix) with ESMTP id A9AFB110109; Fri, 7 Dec 2007 21:16:04 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=skype.net; h=subject:from:to:cc:in-reply-to:references:content-type:date:message-id:mime-version:content-transfer-encoding; q=dns/txt; s=mail; bh=PGBMh4d8KvB0rLc5d6DN3Wc0raE=; b=Z6KONrhAz+dPyOxhvCjONdXMAPbMnUbZX/xR/rQM7vD2UbeLMaV8uPyolTXUH0qM4IU2UOPQIIE9BqozWOoSLDJljuyD+yjAOjFVHPWGN6eHsfh57U+EeG4Lg2pHPFPzpwzuengfRgqQjInPs6PI4mdz960PazYw+V2ZuqRjTMY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=skype.net; h=subject:from:to:cc:in-reply-to:references:content-type:date:message-id:mime-version:content-transfer-encoding; q=dns; s=mail; b=ohPw72bB9HBcRkUa8p06fuk7ea99Wsp2YC/jLzpAJe8EPq9rSgS90MVX2ObNaWVXW8ukz9aBvAH1wVsrexd4wX/tx4UEgrnXuRe4g9oGQM0n3yXwn/pEcnIeXcp5Unsv2Lb+N39YJbRq6VjkbZbTHsD1Q0cpNnk3ym/2uihEylo= Received: from localhost (localhost [127.0.0.1]) by mail.skype.net (Postfix) with ESMTP id 9AC4D110104; Fri, 7 Dec 2007 21:16:04 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at skype.net Received: from mail.skype.net ([127.0.0.1]) by localhost (mail.skype.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZvP0Ql8xJcbY; Fri, 7 Dec 2007 21:16:00 +0100 (CET) Received: from [192.168.2.101] (unknown [81.25.252.5]) by mail.skype.net (Postfix) with ESMTP id 9B6B61100F9; Fri, 7 Dec 2007 21:15:59 +0100 (CET) Subject: Re: [DOCS] "distributed checkpoint" From: Hannu Krosing To: Simon Riggs Cc: David Fetter , "Joshua D. Drake" , Tom Lane , Alvaro Herrera , pgsql-docs@postgresql.org, pgsql-hackers@postgresql.org In-Reply-To: <1197051730.4255.603.camel@ebony.site> References: <20071206220348.GM8451@alvh.no-ip.org> <5958.1196991889@sss.pgh.pa.us> <20071206191944.1d7926d2@commandprompt.com> <20071207034328.GB18310@fetter.org> <1197051730.4255.603.camel@ebony.site> Content-Type: text/plain; charset=utf-8 Date: Fri, 07 Dec 2007 22:16:00 +0200 Message-Id: <1197058560.6307.1.camel@hannu-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.12.1 Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200712/194 X-Sequence-Number: 111483 =C3=9Chel kenal p=C3=A4eval, R, 2007-12-07 kell 18:22, kirjutas Simon Rig= gs: > On Thu, 2007-12-06 at 19:43 -0800, David Fetter wrote: > > On Thu, Dec 06, 2007 at 07:19:44PM -0800, Joshua D. Drake wrote: > > > -----BEGIN PGP SIGNED MESSAGE----- > > > Hash: SHA1 > > >=20 > > > On Thu, 06 Dec 2007 20:44:49 -0500 > > > Tom Lane wrote: > > >=20 > > > > Alvaro Herrera writes: > > > > > Am I the only one who finds the phrase "distributed checkpointi= ng" > > > > > a bit awkward? Would it be better if we used "time-distributed > > > > > checkpointing" instead? > > > >=20 > > > > Yeah, "distributed" has a bunch of connotations that are wrong fo= r > > > > this purpose. > > > >=20 > > > > I spent a bit of time with a thesaurus but didn't come up with > > > > anything that seemed le mot juste. Best I could do was "spread > > > > checkpoint" or "time-extended checkpoint". Anybody have a better > > > > idea? > > >=20 > > > balanced > > > gradual > > > extended (I see you mention time-extended but wouldn't time be impl= icit > > > based on the actual docs and thus we only need extended?) > >=20 > > How about "smoothed?" >=20 > Agreed >=20 > "Smoothed" makes a lot of sense for me. We used to have a checkpoint > spike, now we don't.=20 wide checkpoints ?=20 provide wide and low spikes :) or even background checpoints ? > Perhaps we should say something like "time extended checkpoints provide > smoother (transaction?) response times"=20