From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BAC91C10F28 for ; Fri, 6 Mar 2020 19:25:07 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7E94020675 for ; Fri, 6 Mar 2020 19:25:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="TAjRKxCH"; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="TAjRKxCH" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7E94020675 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=HansenPartnership.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 042C56B0003; Fri, 6 Mar 2020 14:25:07 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id F35C86B0006; Fri, 6 Mar 2020 14:25:06 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E4BF26B0007; Fri, 6 Mar 2020 14:25:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0069.hostedemail.com [216.40.44.69]) by kanga.kvack.org (Postfix) with ESMTP id C9ECF6B0003 for ; Fri, 6 Mar 2020 14:25:06 -0500 (EST) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 930E15DFE for ; Fri, 6 Mar 2020 19:25:06 +0000 (UTC) X-FDA: 76565915412.13.bed10_66b5f42a42c00 X-HE-Tag: bed10_66b5f42a42c00 X-Filterd-Recvd-Size: 4509 Received: from bedivere.hansenpartnership.com (bedivere.hansenpartnership.com [66.63.167.143]) by imf27.hostedemail.com (Postfix) with ESMTP for ; Fri, 6 Mar 2020 19:25:05 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by bedivere.hansenpartnership.com (Postfix) with ESMTP id 55B8A8EE11D; Fri, 6 Mar 2020 11:25:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=hansenpartnership.com; s=20151216; t=1583522704; bh=uVWbr0sqmC6Bb+PI/aDoieyYYNanyXUlEte94lPWyXE=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=TAjRKxCHcV6+2WRh7M29+WjXLosknEBZBPU9UOSQqo3d249iIoBMU0uVPfrBFo0ao u/aoixVaQfyHS0CoVJiE3+Sy97ml9+0H5cY4mO5SQIP1EHpcrdbSUShTav/lID3+7x bUw3w4Gflw03KyeqYWl4wZW5aWuq3GcexyRQhhl0= Received: from bedivere.hansenpartnership.com ([127.0.0.1]) by localhost (bedivere.hansenpartnership.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LcvSHL7VW-6A; Fri, 6 Mar 2020 11:25:04 -0800 (PST) Received: from [153.66.254.194] (unknown [50.35.76.230]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bedivere.hansenpartnership.com (Postfix) with ESMTPSA id 938658EE0F8; Fri, 6 Mar 2020 11:25:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=hansenpartnership.com; s=20151216; t=1583522704; bh=uVWbr0sqmC6Bb+PI/aDoieyYYNanyXUlEte94lPWyXE=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=TAjRKxCHcV6+2WRh7M29+WjXLosknEBZBPU9UOSQqo3d249iIoBMU0uVPfrBFo0ao u/aoixVaQfyHS0CoVJiE3+Sy97ml9+0H5cY4mO5SQIP1EHpcrdbSUShTav/lID3+7x bUw3w4Gflw03KyeqYWl4wZW5aWuq3GcexyRQhhl0= Message-ID: <1583522702.3653.86.camel@HansenPartnership.com> Subject: Re: [LSFMMBPF TOPIC] Killing LSFMMBPF From: James Bottomley To: Matthew Wilcox Cc: Josef Bacik , lsf-pc , Linux FS Devel , linux-mm@kvack.org, linux-xfs@vger.kernel.org, Btrfs BTRFS , bpf@vger.kernel.org, linux-ext4@vger.kernel.org, linux-block@vger.kernel.org Date: Fri, 06 Mar 2020 11:25:02 -0800 In-Reply-To: <20200306182302.GA31215@bombadil.infradead.org> References: <20200306160548.GB25710@bombadil.infradead.org> <1583516279.3653.71.camel@HansenPartnership.com> <20200306182302.GA31215@bombadil.infradead.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.030443, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, 2020-03-06 at 10:23 -0800, Matthew Wilcox wrote: > On Fri, Mar 06, 2020 at 09:37:59AM -0800, James Bottomley wrote: > > Can I just inject a dose of reality here: The most costly thing is > > Venue rental (which comes with a F&B minimum) and the continuous > > Tea and Coffee. Last year for Plumbers, the venue cost us $37k and > > the breaks $132k (including a lunch buffet, which was a requirement > > of the venue rental). Given we had 500 attendees, that, alone is > > $340 per head already. Now we could cut out the continuous tea and > > coffee ... and the espresso machines you all raved about last year > > cost us about $7 per shot. But it's not just this, it's also AV > > (microphones and projectors) and recording, and fast internet > > access. That all came to about $100k last year (or an extra $200 > > per head). So you can see, running at the level Plumbers does > > you're already looking at $540 a head, which, co-incidentally is > > close to our attendee fee. To get to $300 per head, you lot will > > have to give up something in addition to the espresso machines, > > what is it to be? > > I was basing that on https://www.bsdcan.org/2020/registration.php > which is a ~200 person conference, charging $200 for 2 days. They > provide morning & afternoon snacks as well as lunch and coffee. I didn't say you couldn't run a conference for this low, I was just point out what Plumbers currently costs. FOSDEM clearly manages in Europe for free, but what they have to give up is huge: No tea/coffee/lunch/breakfast at all. Doing it in a University helps with A/V, and venue rental, but you're severely constrained by their timetable (Ethan Miller did offer us UC Santa Cruz one year for LSF/MM but we eventually concluded that date constraints and logistics would just be too difficult). James