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 Received: from picard.linux.it (picard.linux.it [213.254.12.146]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BA064C433F5 for ; Mon, 28 Mar 2022 12:39:12 +0000 (UTC) Received: from picard.linux.it (localhost [IPv6:::1]) by picard.linux.it (Postfix) with ESMTP id 93D273C9A48 for ; Mon, 28 Mar 2022 14:39:10 +0200 (CEST) Received: from in-4.smtp.seeweb.it (in-4.smtp.seeweb.it [IPv6:2001:4b78:1:20::4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by picard.linux.it (Postfix) with ESMTPS id E03413C07B7 for ; Mon, 28 Mar 2022 14:38:59 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by in-4.smtp.seeweb.it (Postfix) with ESMTPS id 567D810009E4 for ; Mon, 28 Mar 2022 14:38:58 +0200 (CEST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 7AD2B210EB; Mon, 28 Mar 2022 12:38:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1648471138; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=B8IUprMlwUdd+yKfKL3NvuiFa1MqijO3nohmm2i/Tdc=; b=QFN04wYldH++RhtQj5LH2AWaLuAQ4T0RivomRwHGj32Oe8BB+ZIh6GVWRxXG/lX/SGL3Cs JmhEK+TSw244hC7COV9gt9RS18VGiaVMi5F2jT+i9+zRUE/o95awxV19lJMcGxExFnvpoR iNVoupl6uh44oT9+RbFu0SlBiJtOM4Y= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1648471138; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=B8IUprMlwUdd+yKfKL3NvuiFa1MqijO3nohmm2i/Tdc=; b=aBdjoZUoJlV2NCly7a6BcnDQURrYVKEc1txQYfraYuNtth8ObMfAOaooUuMhYaPnM0blVh EW5Nvl6K22ouQhAA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 6090313215; Mon, 28 Mar 2022 12:38:58 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 8z5pF2KsQWJJAgAAMHmgww (envelope-from ); Mon, 28 Mar 2022 12:38:58 +0000 Date: Mon, 28 Mar 2022 14:41:17 +0200 From: Cyril Hrubis To: Li Wang Message-ID: References: <20220325040057.544211-1-liwang@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Virus-Scanned: clamav-milter 0.102.4 at in-4.smtp.seeweb.it X-Virus-Status: Clean Subject: Re: [LTP] [PATCH] clock_gettime04: set threshold based on the clock tick rate X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Viresh Kumar , Eirik Fuller , Waiman Long , LTP List Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Hi! Thinking of it again I think that: - the COARSE clocks runs on jiffies, the rest of the clocks may use high resolution if available - we need two deltas, one for the coarse clocks and one for the rest - the delta should generally be clock resolution + epsion (5ms) -- Cyril Hrubis chrubis@suse.cz -- Mailing list info: https://lists.linux.it/listinfo/ltp