From owner-freebsd-arch@freebsd.org Sun Mar 12 19:04:53 2017 Return-Path: Delivered-To: freebsd-arch@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7209FD08EB8 for ; Sun, 12 Mar 2017 19:04:53 +0000 (UTC) (envelope-from gallatin@cs.duke.edu) Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 47FF21CBD; Sun, 12 Mar 2017 19:04:53 +0000 (UTC) (envelope-from gallatin@cs.duke.edu) Received: from [192.168.200.3] (c-73-147-115-187.hsd1.va.comcast.net [73.147.115.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: gallatin) by duke.cs.duke.edu (Postfix) with ESMTPSA id 7860E270005C; Sun, 12 Mar 2017 14:55:21 -0400 (EDT) DMARC-Filter: OpenDMARC Filter v1.3.1 duke.cs.duke.edu 7860E270005C Authentication-Results: duke.cs.duke.edu; dmarc=none header.from=cs.duke.edu DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=cs.duke.edu; s=mail0816; t=1489344921; bh=VB6UVvOsT+N9fLieZDa4RqM9AGfjtrvhjWgw4ojFzsI=; h=Subject:To:From:Date:From; b=Bmmlt+GZy0snn+yExMIxJYgHNpNHIDdqdBD3XOvHwZIwpxKyTu35ONHC7ABN/WbbR /YboVZfVKCvGOuXVI+9PwBx/hD6dnQmhnlSCqll45nWYTm/s6/iiP6ROTz9OMTT1hJ PsbhfCYme/8/T+tzF8hgFcJzNDcucXVB1tuvioKYEBU+YJnbYzX+HL3fzzGk3aqbvq v+Z72/SiErdcjRUORbQ4YtvumlPcFVEoM0mnnIUyWOAu0P1gMLKKnFSyBaAsPzimjb DmFLJdl/HIXXV2+GFRf+zklIFoJ+ORDaoBY1kRpAak/3j/EBhA0DcKLDQAVwRocWMq Vv4RGSf9j4njg== Subject: Re: UMA_ZONE_CACHESPREAD and uma_zsecond_add To: Andriy Gapon , freebsd-arch@FreeBSD.org, Jeff Roberson References: <76a47d9a-da39-75f4-5794-24724d0befc7@FreeBSD.org> From: Andrew Gallatin Message-ID: <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu> Date: Sun, 12 Mar 2017 14:55:19 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.6.0 MIME-Version: 1.0 In-Reply-To: <76a47d9a-da39-75f4-5794-24724d0befc7@FreeBSD.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Mar 2017 19:04:53 -0000 On 03/08/2017 10:56, Andriy Gapon wrote: > > First, the history of UMA_ZONE_CACHESPREAD and uma_zsecond_add(): > https://lists.freebsd.org/pipermail/freebsd-arch/2008-December/008800.html > > Now, more than 8 years after those features were introduced, we still don't have > a single in-tree consumer for them. > Does anyone use those features out of tree? > Does anyone still have plans to make use of them? > Will anyone get sad if those features get garbage collected? This is something that I keep getting suggestions to try at Netflix on our 100G boxes. From the description, it really seems like it might help us to have a few data types allocated like this. Can you give me, say, one month to look into this before axing it? Thanks, Drew From owner-freebsd-arch@freebsd.org Sun Mar 12 19:57:04 2017 Return-Path: Delivered-To: freebsd-arch@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 681B8D0947C for ; Sun, 12 Mar 2017 19:57:04 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-wr0-x235.google.com (mail-wr0-x235.google.com [IPv6:2a00:1450:400c:c0c::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id F39BD11DC; Sun, 12 Mar 2017 19:57:03 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by mail-wr0-x235.google.com with SMTP id l37so92296822wrc.1; Sun, 12 Mar 2017 12:57:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=F1GtIT5Vwm+VfQ7csndzkONCacL6vAuH4hXoCQ3rYso=; b=FrEDhPBxmqTyTrQPPF0SwcTKlRXSCduSp5tjJWUcWw8DQ6BCcP1Byr+ICE81BL/gxF KGnwu1X2tean3YgCENmaBAPAjSdNHcqBymjJ9jnOmwEECSRj1lq7Gesd35r4Y/NAJjNy WVcGKuhle40AFt4+8Roy9zN6nrThowY7jjvMy2Mn4mo/ruwBX8EJE/Iv43V2TQA0ZQbt +Lu4YsB7kONvwJpgd1k8mW9DHlxCWBW7MiICV7mgzpYqPQDDRD1fiK+d7iGPoamWmRRW zFqdZYzH/a1l7XYxbsp22hAwM611nqQWjdlXVKtSn8qmyTwFA4LOIIsOby1rlXIobVMS 0GGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=F1GtIT5Vwm+VfQ7csndzkONCacL6vAuH4hXoCQ3rYso=; b=iaj285iFKfwPyqvzMsFY2SLXS+tpziXd5lcfWJCRBt7yA3T4DUxYgf/48FZiBfyp7K fYJqGRlbivAfUo6BNajIh3hTJlu86b7QaJsFKcKdd+K9B/Rqgzd5jWU+YmusOjI1DsYq OTwILqDx1Pp+xq6kP8SJC4reN/OqnFuqmJUCaH+UEug0Lhucc44cFSezQ/8iT8q5j0xg Ay3QCq3GY992E6B5FiGONtfo7qrVbPEwfitdvvsmREf5jjAyMLfucxxXSU1EmnTJkB2t /FHO9rzLf9BN/NpbznPKWznSpZYDPCllQNiPbQ46DzoN4qoj1l/ti6hoqXuGf0c7jbJ9 rLig== X-Gm-Message-State: AMke39kEdJLrgEjQlrMY6Lde5kG/HlaLDi92BEyjl7OZIJTtAu8T7jcKFlCR3dFhQf5z034080zUsUbQXOmRWw== X-Received: by 10.223.183.46 with SMTP id l46mr22802572wre.89.1489348621910; Sun, 12 Mar 2017 12:57:01 -0700 (PDT) MIME-Version: 1.0 Received: by 10.28.128.133 with HTTP; Sun, 12 Mar 2017 12:57:01 -0700 (PDT) In-Reply-To: <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu> References: <76a47d9a-da39-75f4-5794-24724d0befc7@FreeBSD.org> <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu> From: Adrian Chadd Date: Sun, 12 Mar 2017 12:57:01 -0700 Message-ID: Subject: Re: UMA_ZONE_CACHESPREAD and uma_zsecond_add To: Andrew Gallatin Cc: Andriy Gapon , "freebsd-arch@freebsd.org" , Jeff Roberson Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Mar 2017 19:57:04 -0000 Is there any reason to nuke it right now? Is it preventing other work from progressing? -adrian On 12 March 2017 at 11:55, Andrew Gallatin wrote: > On 03/08/2017 10:56, Andriy Gapon wrote: >> >> >> First, the history of UMA_ZONE_CACHESPREAD and uma_zsecond_add(): >> https://lists.freebsd.org/pipermail/freebsd-arch/2008-December/008800.html >> >> Now, more than 8 years after those features were introduced, we still >> don't have >> a single in-tree consumer for them. >> Does anyone use those features out of tree? >> Does anyone still have plans to make use of them? >> Will anyone get sad if those features get garbage collected? > > > This is something that I keep getting suggestions to try at Netflix > on our 100G boxes. From the description, it really seems like > it might help us to have a few data types allocated like this. > > Can you give me, say, one month to look into this before axing > it? > > Thanks, > > Drew > > > _______________________________________________ > freebsd-arch@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arch > To unsubscribe, send any mail to "freebsd-arch-unsubscribe@freebsd.org" From owner-freebsd-arch@freebsd.org Mon Mar 13 12:33:17 2017 Return-Path: Delivered-To: freebsd-arch@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7A2C8D05883 for ; Mon, 13 Mar 2017 12:33:17 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from citapm.icyb.net.ua (citapm.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id CAF151A51 for ; Mon, 13 Mar 2017 12:33:16 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citapm.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id OAA29703; Mon, 13 Mar 2017 14:33:07 +0200 (EET) (envelope-from avg@FreeBSD.org) Received: from localhost ([127.0.0.1]) by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1cnP9v-000NYd-KH; Mon, 13 Mar 2017 14:33:07 +0200 Subject: Re: UMA_ZONE_CACHESPREAD and uma_zsecond_add To: Andrew Gallatin , freebsd-arch@FreeBSD.org, Jeff Roberson References: <76a47d9a-da39-75f4-5794-24724d0befc7@FreeBSD.org> <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu> From: Andriy Gapon Message-ID: Date: Mon, 13 Mar 2017 14:32:11 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.7.1 MIME-Version: 1.0 In-Reply-To: <035f48ea-8722-f697-cc71-cb8ee772e062@cs.duke.edu> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Mar 2017 12:33:17 -0000 On 12/03/2017 20:55, Andrew Gallatin wrote: > On 03/08/2017 10:56, Andriy Gapon wrote: >> >> First, the history of UMA_ZONE_CACHESPREAD and uma_zsecond_add(): >> https://lists.freebsd.org/pipermail/freebsd-arch/2008-December/008800.html >> >> Now, more than 8 years after those features were introduced, we still don't have >> a single in-tree consumer for them. >> Does anyone use those features out of tree? >> Does anyone still have plans to make use of them? >> Will anyone get sad if those features get garbage collected? > > This is something that I keep getting suggestions to try at Netflix > on our 100G boxes. From the description, it really seems like > it might help us to have a few data types allocated like this. > > Can you give me, say, one month to look into this before axing > it? Sure! That's exactly why I wanted to ask everyone first. I am not itching to remove that code :) -- Andriy Gapon