From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from [87.239.111.99] (localhost [127.0.0.1]) by dev.tarantool.org (Postfix) with ESMTP id C34BF6F3C7; Fri, 26 Mar 2021 10:05:02 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 dev.tarantool.org C34BF6F3C7 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=tarantool.org; s=dev; t=1616742302; bh=vPF0G85MitYhXvdLv3Eku5wG6encX/aNraXXoWBL5Mc=; h=Date:To:Cc:References:In-Reply-To:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From:Reply-To:From; b=nQ/irsoh2eKWijah0qYiSVx0JSwGxxaxheWs8iR2NsFq/lcXScEn28Tw0fr0kZBVQ XjXluOt+5Y6qEBLb7gRQVELeLjS4LYJ/wOo+QA7sYI7PII1oYZ3C+74eFtlrZUNTWe 76vjhgdvYbCy3t5M/3dJNu+KxQsiD6iqplo7pZM8= Received: from mail-lj1-f177.google.com (mail-lj1-f177.google.com [209.85.208.177]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by dev.tarantool.org (Postfix) with ESMTPS id 116BD6F3C7 for ; Fri, 26 Mar 2021 10:05:02 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 dev.tarantool.org 116BD6F3C7 Received: by mail-lj1-f177.google.com with SMTP id u9so6170206ljd.11 for ; Fri, 26 Mar 2021 00:05:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=HPQ06QBGJ6shP8/5sgPW/QTuhCQGJ3GSF+t5FAs7ucM=; b=GtSvQAUmycbCMgLGxNANaVXCWfaBxcwOXvNQwO5680JObIG90gZ4EaFjxwyj2jSn79 Hr7jm5PAjQIIWbGA0k7QZFVl3aHjxC/UM6lEncylNdEyyfotGqHufWR0SkeSy1R+Fadj dhXhiydaZbkI5o1Mme52gPFW7L2Tdbp3ADw8ylHUqp0YHYhrlUCR8kxydvC6umVf43FX lD5P+itpUJk4zdlW4wDIsUTZKAy1WSOQGKNIOiuufEgT9vXAXnkvp+VM0MYvrEquhhZG rJvnNTB4VeY/E1dt8kr2NsTKbQxvVQUcJw1Ou4YCGGck9RNa5FfteWqkd103D9DLxMU4 LgGg== X-Gm-Message-State: AOAM533YnLL62DOFS0E7/PbJIsvtHEFD1qa2MgMoKiRtyNfy5abETG7T wfct1b/XGg8m/nQuaJYOYDjR28/jXHQffQ== X-Google-Smtp-Source: ABdhPJypHnwzerWR7ACi77J9LfmR6KtolVGsrzVJtlsgzn0IioYXzgvomnNmZdyr0xtDwVOPU4rB0w== X-Received: by 2002:a2e:5804:: with SMTP id m4mr8024857ljb.419.1616742301005; Fri, 26 Mar 2021 00:05:01 -0700 (PDT) Received: from grain.localdomain ([5.18.171.94]) by smtp.gmail.com with ESMTPSA id k9sm1057558ljg.57.2021.03.26.00.04.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Mar 2021 00:05:00 -0700 (PDT) Received: by grain.localdomain (Postfix, from userid 1000) id 2ABB1560175; Fri, 26 Mar 2021 10:04:59 +0300 (MSK) Date: Fri, 26 Mar 2021 10:04:59 +0300 To: Vladislav Shpilevoy Cc: tml Message-ID: References: <20210324163759.1900553-1-gorcunov@gmail.com> <20210324163759.1900553-2-gorcunov@gmail.com> <8faa2e1e-c198-832d-d527-1acf2280720d@tarantool.org> <19605c5e-e96c-8580-6309-3b0e58df8c01@tarantool.org> <7aee215d-4a5a-1fba-bea1-510a5ced6287@tarantool.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7aee215d-4a5a-1fba-bea1-510a5ced6287@tarantool.org> User-Agent: Mutt/2.0.5 (2021-01-21) Subject: Re: [Tarantool-patches] [PATCH v4 1/3] gc/xlog: delay xlog cleanup until relays are subscribed X-BeenThere: tarantool-patches@dev.tarantool.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Tarantool development patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Cyrill Gorcunov via Tarantool-patches Reply-To: Cyrill Gorcunov Errors-To: tarantool-patches-bounces@dev.tarantool.org Sender: "Tarantool-patches" On Fri, Mar 26, 2021 at 12:51:57AM +0100, Vladislav Shpilevoy wrote: > > > > Most important reason is an epsilon value on hw level, how many > > users remember what exactly range the "machine zero" covers? > > I don't remember, and I don't see why should I really. What is the > reason you ban 0.0009 but allow 0.001? This looks random and does > not protect from anything. > > > Do we really want to allow precision close to nanoseconds? > > We allow double. Whatever precision it gives. OK, thanks for explanation.