From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cassarossa.samfundet.no (cassarossa.samfundet.no [IPv6:2001:67c:29f4::29]) by lists.bufferbloat.net (Postfix) with ESMTPS id 8F14A3B2D4 for ; Tue, 5 Jan 2016 18:20:13 -0500 (EST) Received: from yesthisis.dog ([2001:67c:29f4::3007] helo=pannekake.samfundet.no ident=unknown) by cassarossa.samfundet.no with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84) (envelope-from ) id 1aGatf-0003Gk-KC for bloat@lists.bufferbloat.net; Wed, 06 Jan 2016 00:20:12 +0100 Received: from sesse by pannekake.samfundet.no with local (Exim 4.84) (envelope-from ) id 1aGatf-0003G5-Ds for bloat@lists.bufferbloat.net; Wed, 06 Jan 2016 00:20:11 +0100 Date: Wed, 6 Jan 2016 00:20:11 +0100 From: "Steinar H. Gunderson" To: bloat@lists.bufferbloat.net Message-ID: <20160105232011.GB8545@sesse.net> References: <165DB6E9-A6DD-4626-B6AA-E1B2DBA0B5FA@gmail.com> <568C1209.5050403@taht.net> <20160105192930.GA7803@sesse.net> <568C1B5E.1070008@taht.net> <20160105122703.516b54be@xeon-e3> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20160105122703.516b54be@xeon-e3> X-Operating-System: Linux 4.3.0 on a x86_64 User-Agent: Mutt/1.5.23 (2014-03-12) Subject: Re: [Bloat] Hardware upticks X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Jan 2016 23:20:13 -0000 On Tue, Jan 05, 2016 at 12:27:03PM -0800, Stephen Hemminger wrote: > Intel has some new Cache QoS stuff that allows configuring how much > cache is allowed per context. But of course it is only on the newest/latest/unoptinium Note that this is for improving fairness between applications, not total throughput of the machine. It will gain you nothing if you run a single server; what it gains you is that you can take your low-priority batch job and run it next to your mission-critical web server, without having to worry it will eat up all your L3. Needless to say, it is for advanced users. /* Steinar */ -- Homepage: https://www.sesse.net/