Groups > comp.lang.python > #61973

Re: Is it more CPU-efficient to read/write config file or read/write sqlite database?

Path	csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!news.tele.dk!news.tele.dk!small.news.tele.dk!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path	<rosuav@gmail.com>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.008
X-Spam-Evidence	'H': 0.98; 'S': 0.00; '16,': 0.03; 'subject:file': 0.07; 'cc:addr:python-list': 0.11; 'behaviour.': 0.16; 'disc': 0.16; 'flush': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'simpson': 0.16; 'sqlite': 0.16; 'subject: \n ': 0.16; 'wrote:': 0.18; 'commit': 0.19; 'cc:addr:python.org': 0.22; 'mon,': 0.24; 'cc:2**0': 0.24; 'mention': 0.26; 'subject:/': 0.26; 'header:In-Reply-To:1': 0.27; 'correct': 0.29; 'am,': 0.29; 'dec': 0.30; 'message- id:@mail.gmail.com': 0.30; 'forces': 0.31; "i'd": 0.34; 'received:google.com': 0.35; 'disk': 0.36; 'subject:?': 0.36; 'should': 0.36; 'level': 0.37; 'extremely': 0.39; 'subject:more': 0.64; 'subject:read': 0.84; 'to:none': 0.92; '2013': 0.98
DKIM-Signature	v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=ZKk8wh5zpIRXK4U2UolLfglfrURtsskxD+ePX9nwSGg=; b=O/NigxRLzrWWHDkDrGYGGgL5SloXctZhFxhDLmZ0qWOdDjne1cmuiOK9LBeyYRE5+h ktumuS/+fsWYghLv4N8IWpaRAdP7zdaRW6n34guvZ1vwKh3nyeo9FM211gQBLRJ3Dv0Q Ck5xi7bpmWDw3o7sSCZ16Y+n1/8KffMBS4wEMQa2G8qFRmATyekWtC2E4NHwLUnc1Dt7 OUc+irhehQZNOWPg46h2A+A5Oz2AaCcGK4sevOBZNUsxuI7+Bh0ywCR1CfJtctaFcGBc xGwGX6FrktpoIv9DNeDLEbQV6YH1FSaX8g14H1Vk5M9feHejFeEXAU6VGnQazRIYX6js LiYw==
MIME-Version	1.0
X-Received	by 10.68.236.233 with SMTP id ux9mr16701715pbc.45.1387151416317; Sun, 15 Dec 2013 15:50:16 -0800 (PST)
In-Reply-To	<20131215231228.GA6608@cskk.homeip.net>
References	<20131214101518.69b040dc@bigbox.christie.dr> <20131215231228.GA6608@cskk.homeip.net>
Date	Mon, 16 Dec 2013 10:50:16 +1100
Subject	Re: Is it more CPU-efficient to read/write config file or read/write sqlite database?
From	Chris Angelico <rosuav@gmail.com>
Cc	"python-list@python.org" <python-list@python.org>
Content-Type	text/plain; charset=UTF-8
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.15
Precedence	list
List-Id	General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe	<https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive	<http://mail.python.org/pipermail/python-list/>
List-Post	<mailto:python-list@python.org>
List-Help	<mailto:python-list-request@python.org?subject=help>
List-Subscribe	<https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups	comp.lang.python
Message-ID	<mailman.4157.1387151420.18130.python-list@python.org> (permalink)
Lines	9
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1387151420 news.xs4all.nl 2941 [2001:888:2000:d::a6]:49133
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:61973

Show key headers only | View raw

On Mon, Dec 16, 2013 at 10:12 AM, Cameron Simpson <cs@zip.com.au> wrote:
>   + traditionally, sqlite is extreme fsync() happy; forces a disc
>     level flush on each commit - extremely slow on busy databases,
>     not to mention hard of drives

I'd say that's correct behaviour. A commit should be sync'd to disk.
If you don't want it to go to the disk yet, don't commit yet!

ChrisA

Back to comp.lang.python | Previous | Next | Find similar | Unroll thread

Thread

Re: Is it more CPU-efficient to read/write config file or read/write sqlite database? Chris Angelico <rosuav@gmail.com> - 2013-12-16 10:50 +1100

csiph-web