From: Phil Sutter <phil@nwl.cc>
To: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Stephen Hemminger <shemming@brocade.com>,
netdev@vger.kernel.org
Subject: Re: [iproute PATCH 0/2] Netns performance improvements
Date: Thu, 7 Jul 2016 17:48:09 +0200 [thread overview]
Message-ID: <20160707154809.GN620@orbyte.nwl.cc> (raw)
In-Reply-To: <577E5244.8030601@6wind.com>
On Thu, Jul 07, 2016 at 02:59:48PM +0200, Nicolas Dichtel wrote:
> Le 07/07/2016 13:17, Phil Sutter a écrit :
> [snip]
> > The issue came up during OpenStack Neutron testing, see this ticket for
> > reference:
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=1310795
> Access to this ticket is not public :(
*Sigh* OK, here are a few quotes:
"OpenStack Neutron controller nodes, when undergoing testing, are
locking up specifically during creation and mounting of namespaces.
They appear to be blocking behind vfsmount_lock, and contention for the
namespace_sem"
"During the scale testing, we have 300 routers, 600 dhcp namespaces
spread across four neutron network nodes. When then start as one set of
standard Openstack Rally benchmark test cycle against neutron. An
example scenario is creating 10x networks, list them, delete them and
repeat 10x times. The second set performs an L3 benchmark test between
two instances."
Cheers, Phil
next prev parent reply other threads:[~2016-07-07 15:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-05 14:42 [iproute PATCH 0/2] Netns performance improvements Phil Sutter
2016-07-05 14:42 ` [iproute PATCH 1/2] ipnetns: Move NETNS_RUN_DIR into it's own propagation group Phil Sutter
2016-07-05 14:42 ` [iproute PATCH 2/2] ipnetns: Make netns mount points private Phil Sutter
2016-07-05 14:44 ` [iproute PATCH 0/2] Netns performance improvements Eric W. Biederman
2016-07-05 20:51 ` Phil Sutter
2016-07-07 4:58 ` Eric W. Biederman
2016-07-07 11:17 ` Phil Sutter
2016-07-07 12:59 ` Nicolas Dichtel
2016-07-07 15:48 ` Phil Sutter [this message]
2016-07-07 16:16 ` Rick Jones
2016-07-07 16:34 ` Eric W. Biederman
2016-07-07 17:28 ` Rick Jones
2016-07-08 8:12 ` Eric W. Biederman
2016-07-08 14:31 ` Brian Haley
2016-07-08 8:01 ` Nicolas Dichtel
2016-07-08 17:18 ` Rick Jones
2016-07-11 12:51 ` Nicolas Dichtel
2016-07-05 14:49 ` Phil Sutter
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