From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 79DDC3F0A84; Fri, 24 Apr 2026 18:30:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777055403; cv=none; b=iMOviUOtFmfewj+A8hjoZOIoQks1TbHJVxAcXVO0X9XmW815CnEyzJA2TrDW/78VdOnZsenzi9D3dKhnHyg/iOczINhMmY0v4y6k4CNToW636reA++iNgThhyCJHVgy7qDPnq3x6wVHOyZseepHmFNSNTl7HpVCM+M0pkpoPieY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777055403; c=relaxed/simple; bh=BzNwaiPpDC8alS4rZJmriqM/jUW92bmEh5ViUVeeHx4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Hbzva+z7E5BrXSee3nlPMFsi0byXdbx3pLWd9WyvBnAnS8KEW+Ot8Nqr6mOQpUn0gm8SUbmNlCXxiZamW8ZHHBJe8sNDk/M9v/JqVCtbtnRKpgPEN4JwKvRvKReXZNzaAVlUg0/LhYk2cRXIVbGmP+u2Ik5QauJDEdPPqoc5MuY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Sd0j8sAa; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Sd0j8sAa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A683C19425; Fri, 24 Apr 2026 18:30:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777055403; bh=BzNwaiPpDC8alS4rZJmriqM/jUW92bmEh5ViUVeeHx4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Sd0j8sAaVy8wuFaV76RiWDNWWIHk7VwD9ND9k3lNeIypDtdVbsgb2kUiSFxLdtUDX FqdsH/pnHk/BOOKZdtjkv6PYZgo6VqegSG8IsZXYzqFM8KPth6fbEl/HP3RVsg42tb /9e7HfeO0kNS5F2lyY7ksgexZ1EKd48+xkmNT6xFNeU4DBbv3DGoVjr1HF6FLrsvRG odGXHO4uggZgvylGzwZ/rRt9cXEyNIC6/41FGTQYsUslB0a6jVF3dSI1V5Qh9bgwUv S3Pk9lm27TN99EP4EYlwgYEF7Vh3hCapMIn6QRysGpv58OB/ValP66M3Q8AhHkrv37 3/haNzVWbQuvA== Date: Fri, 24 Apr 2026 11:29:58 -0700 From: Nathan Chancellor To: torvic9@mailbox.org Cc: "linux-kbuild@vger.kernel.org" , "nsc@kernel.org" , Thomas Gleixner , Frederic Weisbecker , John Stultz , linux-kernel@vger.kernel.org Subject: Re: [QUESTION] kernel/Kconfig.hz: outdated help texts? Message-ID: <20260424182958.GB813908@ax162> References: <1896318894.249754.1777018724256@app.mailbox.org> Precedence: bulk X-Mailing-List: linux-kbuild@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1896318894.249754.1777018724256@app.mailbox.org> On Fri, Apr 24, 2026 at 10:18:44AM +0200, torvic9@mailbox.org wrote: > Hello, > > I noticed that the help text in kernel/Kconfig.hz has barely changed since > configurable frequency of the timer was introduced in 2005. > > Are these help texts still accurate 21 years later? > > We have e.g.: > > "250 Hz is a good compromise choice allowing server performance > while also showing good interactive responsiveness even > on SMP and NUMA systems. If you are going to be using NTSC video > or multimedia, select 300 Hz instead." > > Is that NTSC/PAL thing still relevant today, in times of high resolution timers, > modern graphics cards, Freesync and high-refresh 4K monitors with 144 Hz? > > Cheers, > > Tor Vic I think this message would be better directed at the timekeeping folks (now CC'd), rather than Kbuild/Kconfig. Cheers, Nathan