From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x231.google.com (mail-wm0-x231.google.com [IPv6:2a00:1450:400c:c09::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 370853B29E for ; Wed, 22 Nov 2017 07:37:42 -0500 (EST) Received: by mail-wm0-x231.google.com with SMTP id v186so9866139wma.2 for ; Wed, 22 Nov 2017 04:37:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:message-id:mime-version:subject:date:references:to:in-reply-to; bh=dX42VGN3/OPUmSW5DniM+jzrdTVtBvBiAr1HgkCqW/c=; b=VFrpVrRzHAVFkjjgG8lMRIkBXJbMDo857EzKbpOEPxnIGrfCD+HJXs2ZqU11wDgPR/ gEUDHclBEoyyvUBhUcm3W+XVbJ89mMpjZ8jWfGA8idktEuqYhO854vPJjjVEhp0Mh39t gHEMj5MqYgzEcFLspZ5KEpaQ1HiCfflXGpET117Ctc/IG4fABPDPXIuIREOC3/IkK/i2 NgxApdf53bqMWLzVD12Vlxp0ntwAF77j/QfiDBeIenkGG6Zf+nbcXZ0doPgg1Gk+PzGS EJDLprtShRo6jFH4du2BsdFYFHZKlIFtCkIb4mqowW20d0pXtPYefWPHg+7MC2EJFmxS vJtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :references:to:in-reply-to; bh=dX42VGN3/OPUmSW5DniM+jzrdTVtBvBiAr1HgkCqW/c=; b=ilewnYWzH54zDAIv0/vpTsQi+I8+aiq/IujrUeWo5o57R71PzeA89hrELHIBuPuPsR Spoy4gC3AHp0T91fvFWc3rwKziTGmmts9qkYz+KntN23GZjylE8OC9FmyNWEh3TlpW6o IFyfECHZ6qn/tOsyT3Oi3/YxYECpN+do9WJgmPDTO6MtB2I2sBXpOVCR8jxpySEK0w4Z 1S+0oQtk0pdQ521LjLV8wyGDlXBZyPSPUVVbXEQpAvHdpY5a0R3m6phN0q/H0TtK1ZE3 Bl7dWGuLjk4cI/w3RGjkXk/hAKZTnA21M+z4vKT+d8YzusQh1qiGyv/26zJd/BI9ONwK mmAw== X-Gm-Message-State: AJaThX6BmnHVAkWM2sApme6SLYxz6g5jvv1LZ1lypmbDLPngdx45SHEq OLeCSLCVOraQPfWs/QnxDYoqXGrf X-Google-Smtp-Source: AGs4zMYnfk01eAzH69GxlSAsjcpO8un71FKi4nyOV6rTEXZVcBgx3Bm2WdfWn47ZO/kHzS9C1DVUtg== X-Received: by 10.28.143.84 with SMTP id r81mr4386380wmd.122.1511354261035; Wed, 22 Nov 2017 04:37:41 -0800 (PST) Received: from [10.72.0.130] (h-1169.lbcfree.net. [185.99.119.68]) by smtp.gmail.com with ESMTPSA id d63sm15188301wmh.3.2017.11.22.04.37.40 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 22 Nov 2017 04:37:40 -0800 (PST) From: Pete Heist Content-Type: multipart/alternative; boundary="Apple-Mail=_911D4CA3-C275-474F-9931-493A3BF08122" Message-Id: Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Date: Wed, 22 Nov 2017 13:37:38 +0100 References: <107CB879-B196-40F1-A7C2-08B963B7A835@gmail.com> To: Cake List In-Reply-To: <107CB879-B196-40F1-A7C2-08B963B7A835@gmail.com> X-Mailer: Apple Mail (2.3124) Subject: Re: [Cake] small cake_hash optimization? X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Nov 2017 12:37:42 -0000 --Apple-Mail=_911D4CA3-C275-474F-9931-493A3BF08122 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Nov 22, 2017, at 11:06 AM, Pete Heist wrote: >=20 > I=E2=80=99ve not done any testing on what the real impact of this = change would be, or even if it breaks something. Ok, at least a little crude testing with sar: = https://docs.google.com/spreadsheets/d/1LKoq5NaswuHm9H1atXoZA1AhNDg6L4UYS3= Pn5lCsb1I/edit#gid=3D0 = ~10% less cake CPU at GigE in this case? What=E2=80=99s a better tool = for timing kernel module functions? Would really need to test if host fairness still works, otherwise this = is irrelevant=E2=80=A6 --Apple-Mail=_911D4CA3-C275-474F-9931-493A3BF08122 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
On Nov 22, 2017, at 11:06 AM, Pete Heist <peteheist@gmail.com>= wrote:

I=E2=80=99ve = not done any testing on what the real impact of this change would be, or = even if it breaks something.

Ok, = at least a little crude testing with sar:


~10% less cake CPU at GigE in this case? What=E2=80=99= s a better tool for timing kernel module functions?

Would really need to test if host fairness still = works, otherwise this is irrelevant=E2=80=A6

= --Apple-Mail=_911D4CA3-C275-474F-9931-493A3BF08122--