IETF Logo Mail Archive

Re: [DNSOP] New Version Notification for draft-wkumari-dnsop-hammer-00.txt

Paul Hoffman <paul.hoffman@vpnc.org> Wed, 03 July 2013 18:41 UTC

Return-Path: <paul.hoffman@vpnc.org>
X-Original-To: dnsop@ietfa.amsl.com
Delivered-To: dnsop@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 44F9B11E81F8 for <dnsop@ietfa.amsl.com>; Wed, 3 Jul 2013 11:41:13 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -102.599
X-Spam-Level:
X-Spam-Status: No, score=-102.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZtOlagbC7XpD for <dnsop@ietfa.amsl.com>; Wed, 3 Jul 2013 11:41:12 -0700 (PDT)
Received: from hoffman.proper.com (IPv6.Hoffman.Proper.COM [IPv6:2605:8e00:100:41::81]) by ietfa.amsl.com (Postfix) with ESMTP id CBA4011E81F3 for <dnsop@ietf.org>; Wed, 3 Jul 2013 11:41:12 -0700 (PDT)
Received: from [165.227.249.247] (sn80.proper.com [75.101.18.80]) (authenticated bits=0) by hoffman.proper.com (8.14.5/8.14.5) with ESMTP id r63If6oQ058437 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Wed, 3 Jul 2013 11:41:06 -0700 (MST) (envelope-from paul.hoffman@vpnc.org)
Content-Type: text/plain; charset="us-ascii"
Mime-Version: 1.0 (Mac OS X Mail 6.5 \(1508\))
From: Paul Hoffman <paul.hoffman@vpnc.org>
In-Reply-To: <F47366EE-A6D0-4041-ADC0-8D7369D7E0C7@kumari.net>
Date: Wed, 03 Jul 2013 11:41:05 -0700
Content-Transfer-Encoding: quoted-printable
Message-Id: <011BF8D4-7C92-45C0-B3A4-984FD04729A3@vpnc.org>
References: <20130702014438.15013.qmail@joyce.lan> <51D26C01.1010508@nlnetlabs.nl> <F47366EE-A6D0-4041-ADC0-8D7369D7E0C7@kumari.net>
To: Warren Kumari <warren@kumari.net>
X-Mailer: Apple Mail (2.1508)
Cc: dnsop@ietf.org, Matthijs Mekking <matthijs@nlnetlabs.nl>
Subject: Re: [DNSOP] New Version Notification for draft-wkumari-dnsop-hammer-00.txt
X-BeenThere: dnsop@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: IETF DNSOP WG mailing list <dnsop.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dnsop>, <mailto:dnsop-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/dnsop>
List-Post: <mailto:dnsop@ietf.org>
List-Help: <mailto:dnsop-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dnsop>, <mailto:dnsop-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 03 Jul 2013 18:41:13 -0000

On Jul 3, 2013, at 10:30 AM, Warren Kumari <warren@kumari.net> wrote:

> 
> On Jul 2, 2013, at 1:58 AM, Matthijs Mekking <matthijs@nlnetlabs.nl> wrote:
> 
>> This sounds a lot like prefetch in unbound, and the configuration option
>> gives some analysis on increased traffic.
>> prefetch: <yes or no>
>>    If yes, message cache elements are prefetched before they expire
>>    to  keep  the  cache  up to date.  Default is no.  Turning it on
>>    gives about 10 percent more traffic and load on the machine, but
>>    popular items do not expire from the cache.
> 
> Doh, sorry, I was not aware that Unbound did this. I'd like to recognize this in the draft, any idea who actually suggested it / added it to the code?

My question earlier still stands: does Unbound do what HAMMER says (waits for a request before refreshing the cache) or does it just refresh the cache automatically? The Unbound doc is unclear (at least to me).

--Paul Hoffman

v2.23.0 | Report a Bug | By Email