From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751732AbbJCGvK (ORCPT ); Sat, 3 Oct 2015 02:51:10 -0400 Received: from mail-pa0-f48.google.com ([209.85.220.48]:34193 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751485AbbJCGvJ (ORCPT ); Sat, 3 Oct 2015 02:51:09 -0400 Date: Sat, 3 Oct 2015 12:20:54 +0530 From: Afzal Mohammed To: Alexey Dobriyan Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: 4.2.2: NR_CPUS effectively being 1 bug Message-ID: <20151003065054.GA4128@afzalpc> References: <20151002204658.GA1970@p183.telecom.by> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151002204658.GA1970@p183.telecom.by> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Fri, Oct 02, 2015 at 11:46:59PM +0300, Alexey Dobriyan wrote: > FYI, I've upgraded from 4.1.7 to 4.2.1 (and retested with 4.2.2) and > everything is scheduled on 1 CPU out of 4 (i5 760). Try disabling CONFIG_NO_HZ_FULL_ALL=y, just curious, what was the purpose of enabling it ? Regards afzal