From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933492AbdDZP0h (ORCPT ); Wed, 26 Apr 2017 11:26:37 -0400 Received: from mout.gmx.net ([212.227.17.21]:51518 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933080AbdDZP00 (ORCPT ); Wed, 26 Apr 2017 11:26:26 -0400 Message-ID: <1493220380.6176.2.camel@gmx.de> Subject: Re: TREE_SRCU slows hotplug by factor ~16 From: Mike Galbraith To: paulmck@linux.vnet.ibm.com Cc: LKML Date: Wed, 26 Apr 2017 17:26:20 +0200 In-Reply-To: <20170426143145.GA5683@linux.vnet.ibm.com> References: <1493002089.4145.7.camel@gmx.de> <20170424033250.GX3956@linux.vnet.ibm.com> <1493011484.4166.13.camel@gmx.de> <20170424062220.GZ3956@linux.vnet.ibm.com> <1493019303.4617.6.camel@gmx.de> <20170424162442.GI3956@linux.vnet.ibm.com> <20170425223642.GA10931@linux.vnet.ibm.com> <20170426143145.GA5683@linux.vnet.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:PsNmZl7fYV8q17fRCKShhxpOG2kOP7Vg0MtoFmGKw+06nqRypja 1QkXHQjJeaFSUDhQFnJvTzflJSPBNbEHdwImCZaOfx+QBbg1TwXy8PPnvEXwcjF6VgbbBxb NRUnbthqTKA5kWxSFFk+yS4pD2ooEiWZuyy+HsJKBa/qeyFZMLMCqOQ5+tZ7nP6xSP5K6cK vxkoeLjGyFFXz5dDHmi7w== X-UI-Out-Filterresults: notjunk:1;V01:K0:2kv1f0xSoMM=:lor2sI+BeBQ/boIxyEeVqv V2zXoleY5JoL1y84TY8dPI8nzozyTRV5RFh4Hsixi+9aN64mY7A2V5TyTQJic4kPvabrt6IW4 vfd4EDEOLyythrULC1BC2Wy1mLc62qxlUfdcAkyWrPJkS9aaRbLzs0sH3FaYTeSJe+sBIfP3Q XxXAokPEC17vM25XSdtZ92qGyUtiuDkGlsnbgAMYDNb4rlynp9k/yCMwgcZFHJOiaE9eQRl7a JpjnPeDCPT79CIOgEN5N3ZxXnM9j7+ZcHXkrtybZNaPXzcPSKmuylIVdJJh6rQfq+Q1Bg1SaF 0QmS9eLwHRjHV56xuwaBUQ3+0sw3772vGFl2akXTuKBNDkauWW4RZCHxg1ZIlvjIYY4rpW2k+ 3+xvklJ4JGTwkHbCRVwUVMP/WRKCiJ2rltkc8xeWduHGT4xmIEVNZhFv1nTOLckDARrzXXVoE N5sA3TTQwrDaL2Yc2nKa44ZhF9qS8ITMX/98zd45D/ETNM85PbRI6LU2OnGGMn0tecrERi6o6 V3eV18TxTv0jcB3aDBYYI0iR5+A07pBUwFmLfR9ePoMipAjqJnMj4egafRBH7PUfLXzFG+xxu 6D+0Bs9LQT9onFTLa7Qa94u86eTmpI9/+lzi2J712EjhJct+WaKPs60Ye8a4pOOvEmD0316l2 7WYgZ0i4ue11GqTmqB32RoobNX324JZ133sFM6CGaXqXtu4K20jEE1A/UE9n9+8UhsGO2m206 OM2GFCYqctHuGypOiHcfMO3C/GkW6zaVwO/SNXBl7fHWJG+ezUYR9ADz7vzTxPZ/1LpTt0GvT 6V5XZv1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2017-04-26 at 07:31 -0700, Paul E. McKenney wrote: > And a sneak preview, semi-tested. If you get a chance to run this, please > let me know now it goes. That took 'time stress-cpu-hotplug.sh' down to 48s, close to classic. -Mike