From owner-svn-src-all@freebsd.org Thu Dec 7 08:12:43 2017 Return-Path: Delivered-To: svn-src-all@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 A92CBEA0B7E; Thu, 7 Dec 2017 08:12:43 +0000 (UTC) (envelope-from agapon@gmail.com) Received: from mail-lf0-f51.google.com (mail-lf0-f51.google.com [209.85.215.51]) (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 3A3177B8FE; Thu, 7 Dec 2017 08:12:42 +0000 (UTC) (envelope-from agapon@gmail.com) Received: by mail-lf0-f51.google.com with SMTP id f13so7122163lff.12; Thu, 07 Dec 2017 00:12:42 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=FxhmGKwSarNxO30kwwTyiReZw6RKetE/koFua0iEIgY=; b=AalA7S4wQYVPUVTFMlKENnyaRPevRzk07eiYUmFBlAu20b94gTdFt5MxAIWmq4+O0w OIrSxpQYvGP7JkLnVyErMuGtR8dCyV0CT56BVK7U/wu6Aj1+3R47XAnxxNG9mo1/Qbrt 2sIT2pLIY2Jeep7Y+a3igyCmAlOWiBacQlq5IcyFeItpwVhgls74oeiPf4+OMBs7Vpfj xtL4r+WaFPvDleyuWn0Jd6xYckQOmbbZFj0vRNcpB7RHR+wQ4qO4CGS331k+CCAiz+Z8 /mIq16h2XM9/EBZBU6Tspps8ys22Zewx8XQz/Iv6pc9TTz87K7pQF49UOqvhQOMRCnz5 1ncQ== X-Gm-Message-State: AJaThX64Kw9JsOGhMeew8YiuaHN0p/h6jFaLbQ88gWnfB97DisGRGngN Oa2opFnU4mW/elXg9m/Muf8uNiSG X-Google-Smtp-Source: AGs4zMZvjRL8vCIBgSWX17cL8Pi4Bw11tREtz+UWqWpcY+ugfAUfBaMuLOfFJ7u/acmK/PV4Yzf14A== X-Received: by 10.46.68.11 with SMTP id r11mr15209697lja.1.1512634354939; Thu, 07 Dec 2017 00:12:34 -0800 (PST) Received: from [192.168.0.88] (east.meadow.volia.net. [93.72.151.96]) by smtp.googlemail.com with ESMTPSA id a15sm930456ljb.11.2017.12.07.00.12.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 07 Dec 2017 00:12:34 -0800 (PST) Subject: Re: svn commit: r326347 - in head/sys: kern sys vm To: Jeff Roberson , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org References: <201711282340.vASNetfP044382@repo.freebsd.org> From: Andriy Gapon Message-ID: Date: Thu, 7 Dec 2017 10:12:33 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <201711282340.vASNetfP044382@repo.freebsd.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Dec 2017 08:12:43 -0000 On 29/11/2017 01:40, Jeff Roberson wrote: > Eliminate kmem_arena and kmem_object in preparation for further NUMA commits. > > The arena argument to kmem_*() is now only used in an assert. A follow-up > commit will remove the argument altogether before we freeze the API for the > next release. > > This replaces the hard limit on kmem size with a soft limit imposed by UMA. When > the soft limit is exceeded we periodically wakeup the UMA reclaim thread to > attempt to shrink KVA. On 32bit architectures this should behave much more > gracefully as we exhaust KVA. On 64bit the limits are likely never hit. > > Reviewed by: markj, kib (some objections) > Discussed with: alc > Tested by: pho > Sponsored by: Netflix / Dell EMC Isilon > Differential Revision: https://reviews.freebsd.org/D13187 Given this bug report https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224080#c3 can we revert this commit until its impact on ZFS is examined (and fixed)? Unfortunately, there is no public comment from you at all. Not even "yes, I am aware, will be looking into it". -- Andriy Gapon