From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751694AbcGOPhV (ORCPT ); Fri, 15 Jul 2016 11:37:21 -0400 Received: from smtprelay0191.hostedemail.com ([216.40.44.191]:50580 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751000AbcGOPhS (ORCPT ); Fri, 15 Jul 2016 11:37:18 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1541:1593:1594:1711:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3352:3622:3865:3866:3867:3870:3871:3872:3874:4250:4321:4423:5007:6261:7875:10004:10400:10848:10967:11232:11658:11914:12296:12517:12519:12663:12740:13069:13311:13357:13439:14096:14097:14181:14659:14721:21080:21220:21324:30008:30054:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:5,LUA_SUMMARY:none X-HE-Tag: price87_549bc91b602c X-Filterd-Recvd-Size: 1991 Date: Fri, 15 Jul 2016 11:37:15 -0400 From: Steven Rostedt To: Sebastian Andrzej Siewior Cc: Thomas Gleixner , LKML , linux-rt-users Subject: Re: [ANNOUNCE] 4.6.4-rt8 Message-ID: <20160715113715.302b550a@gandalf.local.home> In-Reply-To: <20160715153122.GC16938@linutronix.de> References: <20160715114803.GA11606@linutronix.de> <20160715112244.4ff6ecab@gandalf.local.home> <20160715153122.GC16938@linutronix.de> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 15 Jul 2016 17:31:22 +0200 Sebastian Andrzej Siewior wrote: > * Steven Rostedt | 2016-07-15 11:22:44 [-0400]: > > >> Changes since v4.6.4-rt8: > >> > >> - Import Thomas' timer rework known as "timer: Refactor the timer > >> wheel" patch set which made its way into the -TIP tree. With this > >> changes we get NOHZ_FULL working. Finally. > > > >Does this mean that there's no more 1 second tick? > > >From tracing there a timer wakeup each second but before we had a wakeup > each jiffy because we could not lookup the next timer without taking the > base lock which we can do now. > However if there is room for improvement to have a wakeup every two or > five seconds I am all for it because from RT point of view we should be > able to do the same things as the non-RT version. Ah, that's right. I forgot that NOHZ_FULL was broken in -rt, which sorta defeated the point, as NOHZ_FULL is a birth child of -rt in the first place. OK, thanks for clarifying. -- Steve