From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eliezer Tamir Subject: Re: [PATCH v2 net-next 1/4] net: implement support for low latency socket polling Date: Tue, 21 May 2013 09:16:28 +0300 Message-ID: <519B113C.6070006@linux.intel.com> References: <20130519102525.12527.83301.stgit@ladj378.jer.intel.com> <20130519102533.12527.12991.stgit@ladj378.jer.intel.com> <20130520162227.GD24555@two.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Willem de Bruijn , e1000-devel@lists.sourceforge.net, netdev@vger.kernel.org, Jesse Brandeburg , linux-kernel@vger.kernel.org, Don Skidmore , HPA , Eliezer Tamir , Dave Miller To: Andi Kleen Return-path: In-Reply-To: <20130520162227.GD24555@two.firstfloor.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: e1000-devel-bounces@lists.sourceforge.net List-Id: netdev.vger.kernel.org On 20/05/2013 19:22, Andi Kleen wrote: >> diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt >> index f98ca63..cfcf0ea 100644 >> --- a/Documentation/networking/ip-sysctl.txt >> +++ b/Documentation/networking/ip-sysctl.txt >> @@ -19,6 +19,11 @@ ip_no_pmtu_disc - BOOLEAN >> Disable Path MTU Discovery. >> default FALSE >> >> +ip_low_latency_poll - INTEGER >> + Low latency busy poll timeout. (needs CONFIG_INET_LL_RX_POLL) >> + Approximate time in ms to spin waiting for packets on the device queue. >> + default 0 > > Can you document the suggested value here? ok > Also I would add something like "may increase power usage" :) > The other thing I would add is a linuxmib statistic counter so that > we can see the polling happens. Yes, I will add a counter for packets that were received through this path. Eliezer ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired