From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin LaHaise Subject: Re: regression: unregister_netdev() unusably slow Date: Sun, 24 May 2009 18:12:40 -0400 Message-ID: <20090524221240.GI24757@kvack.org> References: <20090524192150.GE24757@kvack.org> <200905250023.31056.denys@visp.net.lb> <20090524213744.GG24757@kvack.org> <4A19BF39.4000305@cosmosbay.com> <20090524214433.GH24757@kvack.org> <4A19C50B.9040304@cosmosbay.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Denys Fedoryschenko , netdev@vger.kernel.org To: Eric Dumazet Return-path: Received: from kanga.kvack.org ([205.233.56.17]:37996 "EHLO kanga.kvack.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759903AbZEXWMu (ORCPT ); Sun, 24 May 2009 18:12:50 -0400 Content-Disposition: inline In-Reply-To: <4A19C50B.9040304@cosmosbay.com> Sender: netdev-owner@vger.kernel.org List-ID: On Mon, May 25, 2009 at 12:07:07AM +0200, Eric Dumazet wrote: > Maybe your HZ is too low ? Changing to 1000 HZ helps a lot HZ is set to 1000. I turned off CONFIG_NO_HZ > Also your hotplug config might do strange things at device removal ? If it were CPU bound, maybe, but this behaviour is tied to the kernel version in use. > What distro do you use ? It's an older Fedora 7 install inside kvm on a Fedora 10 host running 2.6.30-rc7. -ben