From owner-freebsd-current@freebsd.org Wed Aug 29 05:54:32 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0C1EA10A23E9 for ; Wed, 29 Aug 2018 05:54:32 +0000 (UTC) (envelope-from lists@eitanadler.com) Received: from mail-yb0-x22d.google.com (mail-yb0-x22d.google.com [IPv6:2607:f8b0:4002:c09::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A21567D77A for ; Wed, 29 Aug 2018 05:54:31 +0000 (UTC) (envelope-from lists@eitanadler.com) Received: by mail-yb0-x22d.google.com with SMTP id l16-v6so1563312ybk.11 for ; Tue, 28 Aug 2018 22:54:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=eitanadler.com; s=0xdeadbeef; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=tYDPtP/RDuZBfwVunsubCXGmTNU/Cku63RgsydezTYo=; b=KWYqolIvrVpwkyKwpRvCpMNj/zk7jpm0AwsdBUHaFiKMRDL4J2mT8QRRaaaBRe/R7a VCq6Rgaf/guZJNfhbeQpQrYKQkRFuNWQHgFxUGXMx8gBrGXJE9+VHBclTWgP0+rAzpkB NEolHSH+fptC+3Wxk5tJuSCMsqyim60EbIC20= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=tYDPtP/RDuZBfwVunsubCXGmTNU/Cku63RgsydezTYo=; b=A5YH1fIvTrpdH/RPwpHFr6yv09gPh+dhWu1mu4auDT2DWPdEzBaiQ50xuqWsDqs/jd VOL8E/umu0/hKV51vXm9/3/C5NjVoyrSAnpardC5Mruf7Om3II+2KmG85RdzS5Bbuxz+ XHdVWubSLx2mZUk6AxQV6ydGcxgXw6bteBLeGHJ54Mi9xh8H9Q6Y5xMxtmg9TXuFaYL7 75qvRKC5ibZPyP3DoR1iotDWLUOk6M5mbyRf6lU5RgaI0bfpE8AyWxQabYhHp55cKIA6 1+iVmoHqfTkuESv2KLkD1DN5wIExixxDHCfPrjfA8eR/CFIV6amDeQPHT8ngz7rz6CKt B6nQ== X-Gm-Message-State: APzg51B9KVENCMDc88q2aDxsQg/LJSYqDTU7qTDHZvO4CWbXsv3uMw7k v5O/dT/I2lUvAv0+/Gw8QzHFu82BbjS102Am6oUwOHhzNMs= X-Google-Smtp-Source: ANB0VdajCagIQa0NH585KhS3rHxUDq6AY0ugklAYXVOHbs7p6LcL7YPcWAouV9XLa3ULmwcmisjlFadw7cUe6yerMNQ= X-Received: by 2002:a25:aca0:: with SMTP id x32-v6mr2549787ybi.214.1535522070729; Tue, 28 Aug 2018 22:54:30 -0700 (PDT) MIME-Version: 1.0 References: <20180828084015.Horde.JUeG828X_SDlJjeJdfmH7pV@webmail.leidinger.net> <20180828144842.GA29917@raichu> <20180829074431.Horde.NYx7i7jvhNMNuTj-hSYfzSk@webmail.leidinger.net> In-Reply-To: <20180829074431.Horde.NYx7i7jvhNMNuTj-hSYfzSk@webmail.leidinger.net> From: Eitan Adler Date: Tue, 28 Aug 2018 22:54:04 -0700 Message-ID: Subject: Re: old top and new -current: missing arcstat sysctl To: Alexander Leidinger Cc: freebsd-current Current Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Aug 2018 05:54:32 -0000 On Tue, 28 Aug 2018 at 22:46, Alexander Leidinger wrote: > > > > IIRC that would have been the inverted case of running a newer top(1) > > with an older kernel lacking the v_laundry_pages sysctl. In general I'd > > expect us to support running an older top(1) with newer kernels if we > > don't have to bend over backwards to provide compatibility. > > If the new top is summing the 3 up anyway, it sounds like we could > provide the old one as backwards compatibility, even if it is > redundant. I rather have an redundant counter and an old top working > (in the generic case of what we promise to our users; in this specific > case for me I just need to get around to update the jails on the > corresponding systems), than bailing out without displaying anything. I'd support this but don't feel like it justifies breaking the freeze. After the 12.x freeze is over I'll implement this. -- Eitan Adler