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 21:14 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 3BCB721F8904 for <dnsop@ietfa.amsl.com>; Wed, 3 Jul 2013 14:14:28 -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 QfrbLjF4Ukme for <dnsop@ietfa.amsl.com>; Wed, 3 Jul 2013 14:14:27 -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 E209221F8994 for <dnsop@ietf.org>; Wed, 3 Jul 2013 14:14:16 -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 r63LEFAI066736 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Wed, 3 Jul 2013 14:14:16 -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: <20130703210147.69996.qmail@joyce.lan>
Date: Wed, 03 Jul 2013 14:14:15 -0700
Content-Transfer-Encoding: quoted-printable
Message-Id: <EFD28A69-40DC-4A6C-B3E7-B35BC655AF7F@vpnc.org>
References: <20130703210147.69996.qmail@joyce.lan>
To: John Levine <johnl@taugh.com>
X-Mailer: Apple Mail (2.1508)
Cc: dnsop@ietf.org
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 21:14:28 -0000

On Jul 3, 2013, at 2:01 PM, "John Levine" <johnl@taugh.com> wrote:

>>>>   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.
> 
>> 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).
> 
> If it did it automatically, I'd expect a lot more than 10% more
> traffic.  I enabled it on my not terribly busy server and I see
> numbers that look like they're in the 1% range:
> 
> Jul 03 14:23:21 unbound[40669:0] info: server stats for thread 0: 47798 queries, 20108 answers from cache, 27690 recursions, 242 prefetch
> Jul 03 15:23:21 unbound[40669:0] info: server stats for thread 0: 53322 queries, 20319 answers from cache, 33003 recursions, 291 prefetch
> Jul 03 16:23:21 unbound[40669:0] info: server stats for thread 0: 55260 queries, 20697 answers from cache, 34563 recursions, 272 prefetch
> 

Those are pictures. Source code, or developer assurance, or it didn't happen ( to badly bastardize a phrase that the kids these days use ).

v2.23.0 | Report a Bug | By Email