From: Serge Hallyn <serge.hallyn@canonical.com>
To: Tejun Heo <tj@kernel.org>
Cc: Pavel Emelyanov <xemul@parallels.com>,
Kapil Arya <kapil@ccs.neu.edu>, Gene Cooperman <gene@ccs.neu.edu>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Linux Containers <containers@lists.osdl.org>
Subject: Re: [Ksummit-2010-discuss] checkpoint-restart: naked patch
Date: Thu, 18 Nov 2010 21:54:03 -0600 [thread overview]
Message-ID: <20101119035403.GA24031@hallyn.com> (raw)
In-Reply-To: <4CE4F672.1030904@kernel.org>
Quoting Tejun Heo (tj@kernel.org):
> * And, most of all, there are userland implementation and
> virtualization, making the benefit to overhead ratio completely off.
> Userland implementation _already_ achieves most of what's necessary
Guess I'll just be offensive here and say, straight-out: I don't
believe it. Can I see the userspace implementation of c/r?
If it's as good as the kernel level c/r, then aweseome - we don't
need the kernel patches.
If it's not as good, then the thing is, we're not drawing arbitrary
lines saying "is this good enough", rather we want completely
reliable and transparent c/r. IOW, the running task and the other
end can't tell that a migration happened, and, if checkpoint says
it worked, then restart must succeed.
-serge
next prev parent reply other threads:[~2010-11-19 3:54 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.64.1011021530470.12128@takamine.ncl.cs.columbia.edu>
[not found] ` <4CD08419.5050803@kernel.org>
[not found] ` <AANLkTinOg6n3ZA+0gHzw9LouRuUmJ7DJwHtABRy5c=gM@mail.gmail.com>
[not found] ` <4CD26948.7050009@kernel.org>
[not found] ` <20101104164401.GC10656@sundance.ccs.neu.edu>
[not found] ` <4CD3CE29.2010105@kernel.org>
[not found] ` <20101106053204.GB12449@count0.beaverton.ibm.com>
[not found] ` <20101106204008.GA31077@sundance.ccs.neu.edu>
2010-11-07 21:44 ` [Ksummit-2010-discuss] checkpoint-restart: naked patch Oren Laadan
2010-11-07 23:31 ` Gene Cooperman
[not found] ` <4CD5D99A.8000402@cs.columbia.edu>
[not found] ` <20101107184927.GF31077@sundance.ccs.neu.edu>
[not found] ` <20101107184927.GF31077-Rl5vdzG4YPwx/1z6v04GWfZ8FUJU4vz8@public.gmane.org>
2010-11-07 21:59 ` Oren Laadan
2010-11-17 11:57 ` Tejun Heo
2010-11-17 15:39 ` Serge E. Hallyn
2010-11-17 15:46 ` Tejun Heo
2010-11-18 9:13 ` Pavel Emelyanov
[not found] ` <4CE4EE21.6050305-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2010-11-18 9:48 ` Tejun Heo
2010-11-18 20:13 ` Jose R. Santos
2010-11-19 3:54 ` Serge Hallyn [this message]
2010-11-18 19:53 ` Oren Laadan
2010-11-19 4:10 ` Serge Hallyn
2010-11-19 14:04 ` Tejun Heo
2010-11-20 18:05 ` Oren Laadan
[not found] ` <4CE683E1.6010500-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2010-11-19 14:36 ` Kirill Korotaev
[not found] ` <04F4899E-B5C7-4BAF-8F2F-05D507A91408-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2010-11-19 15:33 ` Tejun Heo
2010-11-19 16:00 ` Alexey Dobriyan
2010-11-19 16:01 ` Alexey Dobriyan
2010-11-19 16:10 ` Tejun Heo
2010-11-19 16:25 ` Alexey Dobriyan
2010-11-19 16:06 ` Tejun Heo
2010-11-19 16:16 ` Alexey Dobriyan
2010-11-19 16:19 ` Tejun Heo
2010-11-19 16:27 ` Alexey Dobriyan
[not found] ` <AANLkTin7kd3crS+fTLLea5PhAii7B3dz=n7p7YtQ6d4g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-11-19 16:32 ` Tejun Heo
2010-11-19 16:38 ` Alexey Dobriyan
2010-11-19 16:50 ` Tejun Heo
2010-11-19 16:55 ` Alexey Dobriyan
2010-11-20 17:58 ` Oren Laadan
2010-11-20 18:08 ` Oren Laadan
2010-11-20 18:11 ` Oren Laadan
[not found] ` <4CE69B8C.6050606-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2010-11-20 18:15 ` Oren Laadan
2010-11-20 19:33 ` Tejun Heo
2010-11-21 8:18 ` Gene Cooperman
2010-11-21 8:21 ` Gene Cooperman
2010-11-22 18:02 ` Sukadev Bhattiprolu
2010-11-23 17:53 ` Oren Laadan
2010-11-24 3:50 ` Kapil Arya
2010-11-25 16:04 ` Oren Laadan
2010-11-29 4:09 ` Gene Cooperman
2010-11-21 22:41 ` Grant Likely
2010-11-22 17:34 ` Oren Laadan
2010-11-22 17:18 ` Oren Laadan
2010-11-17 22:17 ` Matt Helsley
[not found] ` <20101117221713.GA27736-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org>
2010-11-18 10:06 ` Tejun Heo
2010-11-18 20:25 ` Oren Laadan
[not found] ` <AANLkTimDXKsBCxbsEOfgkYV2R8FK=bhFdmx9UQow5hqp@mail.gmail.com>
[not found] ` <4CD5DCE3.3000109@cs.columbia.edu>
[not found] ` <20101107194222.GG31077@sundance.ccs.neu.edu>
[not found] ` <4CD71A6B.3020905@cs.columbia.edu>
[not found] ` <20101107230516.GJ31077@sundance.ccs.neu.edu>
[not found] ` <4CD774CA.8030004@cs.columbia.edu>
[not found] ` <20101108162630.GN31077@sundance.ccs.neu.edu>
2010-11-08 18:14 ` Oren Laadan
2010-11-08 18:37 ` Gene Cooperman
2010-11-08 19:34 ` Oren Laadan
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