From: Josh Durgin <jdurgin@redhat.com>
To: Mark Nelson <mnelson@redhat.com>,
"Moreno, Orlando" <orlando.moreno@intel.com>,
"ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Cc: "Blinick, Stephen L" <stephen.l.blinick@intel.com>
Subject: Re: Infernalis on NVMe cephx authentication impact
Date: Tue, 2 Feb 2016 17:53:41 -0800 [thread overview]
Message-ID: <56B15DA5.3010505@redhat.com> (raw)
In-Reply-To: <56B14F6B.7050405@redhat.com>
On 02/02/2016 04:52 PM, Mark Nelson wrote:
> Hi Orlando,
>
> Hrm, looks like https://github.com/ceph/ceph/pull/3896 didn't make it
> into Hammer at release. :( That might also account for a large part of
> the performance disparity. Coincidentally Josh Durgin made a branch
> with the PR backported to hammer a couple of weeks ago here:
>
> https://github.com/ceph/ceph/commits/wip-auth-hammer
Turns out it fixes a bug [0] in addition to being faster, so expect it
in a future hammer release.
Has anyone measured the overhead of message signing (the 'cephx sign
messages' option)? It's on by default with cephx, but can be disabled
separately. What auth settings were these tests using?
It may be worth requiring message signatures by default now that it's
been supported in the kernel client since 3.19.
Josh
[0] http://tracker.ceph.com/issues/14620
next prev parent reply other threads:[~2016-02-03 1:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-03 0:18 Infernalis on NVMe cephx authentication impact Moreno, Orlando
2016-02-03 0:52 ` Mark Nelson
2016-02-03 1:53 ` Josh Durgin [this message]
2016-02-03 2:30 ` Somnath Roy
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