From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: =?ISO-8859-1?Q?Nordl=F6w?= Newsgroups: gmane.emacs.help Subject: Re: Length of obarray vectors Date: Fri, 6 Nov 2009 02:20:10 -0800 (PST) Organization: http://groups.google.com Message-ID: <9760b6da-3458-4fd3-9e4e-febd18a5060a@b2g2000yqi.googlegroups.com> References: <3da94a34-686a-4aaf-a627-109fdbc9150d@v25g2000yqk.googlegroups.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1257504233 20174 80.91.229.12 (6 Nov 2009 10:43:53 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 6 Nov 2009 10:43:53 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Nov 06 11:43:47 2009 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1N6MID-000334-Se for geh-help-gnu-emacs@m.gmane.org; Fri, 06 Nov 2009 11:43:46 +0100 Original-Received: from localhost ([127.0.0.1]:48943 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N6MID-0007KI-BP for geh-help-gnu-emacs@m.gmane.org; Fri, 06 Nov 2009 05:43:45 -0500 Original-Path: news.stanford.edu!usenet.stanford.edu!postnews.google.com!b2g2000yqi.googlegroups.com!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 18 Original-NNTP-Posting-Host: 81.170.219.22 Original-X-Trace: posting.google.com 1257502810 27118 127.0.0.1 (6 Nov 2009 10:20:10 GMT) Original-X-Complaints-To: groups-abuse@google.com Original-NNTP-Posting-Date: Fri, 6 Nov 2009 10:20:10 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: b2g2000yqi.googlegroups.com; posting-host=81.170.219.22; posting-account=ytJKAgoAAAA1tg4ScoRszebXiIldA5vg User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/532.3 (KHTML, like Gecko) Chrome/4.0.226.0 Safari/532.3,gzip(gfe),gzip(gfe) Original-Xref: news.stanford.edu gnu.emacs.help:174463 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:69540 Archived-At: On Nov 6, 11:18=A0am, Nordl=F6w wrote: > What length should I use when I create a vector that will act as an > obarray? > My suggestion: The smallest prime larger than the number of symbols > that should be interned? > If this is correct why does (length obarray) give such a small number, > 15 > > Thanks, > Nordl=F6w It should be 1511, not 15. Forgot one thing: My guess: Is it a trade-off of performance (big length) and memory usage (small length)? Thanks, Nordl=F6w