From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Sutter Subject: [iproute PATCHv2 0/2] Netns performance improvements Date: Tue, 5 Jul 2016 16:51:18 +0200 Message-ID: <1467730280-17493-1-git-send-email-phil@nwl.cc> Cc: "Eric W . Biederman" , netdev@vger.kernel.org To: Stephen Hemminger Return-path: Received: from orbyte.nwl.cc ([151.80.46.58]:33225 "EHLO mail.nwl.cc" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933141AbcGEOvc (ORCPT ); Tue, 5 Jul 2016 10:51:32 -0400 Sender: netdev-owner@vger.kernel.org List-ID: Stress-testing OpenStack Neutron revealed poor performance of 'ip netns' when dealing with a high amount of namespaces. The cause of this lies in the combination of how iproute2 mounts NETNS_RUN_DIR and the netns files therein and the fact that systemd makes all mount points of the system shared. Changes since v1: - Added Suggested-by tag to patches. Phil Sutter (2): ipnetns: Move NETNS_RUN_DIR into it's own propagation group ipnetns: Make netns mount points private ip/ipnetns.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) -- 2.8.2