From: Dario Faggioli <dario.faggioli@citrix.com>
To: Elena Ufimtseva <ufimtseva@gmail.com>
Cc: "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: pv kernel panic xen 4.4 unstable with large number of vcpus and default max_event_channel
Date: Sun, 1 Dec 2013 09:03:15 +0100 [thread overview]
Message-ID: <1385884995.9056.9.camel@Abyss> (raw)
In-Reply-To: <CAEr7rXiy+deBgfQyUhwY9a4-3DvHYgosHzkBLsSNd_gyp2he0A@mail.gmail.com>
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On dom, 2013-12-01 at 01:03 -0500, Elena Ufimtseva wrote:
> Hi
>
> pv kernel crashes when starting guest with vcpus above 150 with latest
> linux kernel.
>
Wow... >150 vcpus for a single guest? What is it that you are up to
here?!? :-P :-P
> WIth increase of max_event_channel it boots (I tried
> 4096).
>
I don't remember the exact numbers. This:
http://wiki.xenproject.org/wiki/Xen_4.3_Feature_List#Performance_and_Scalability_Enhancements
says you should be able to reach 750 vcpus, but it's probably
_in_total_, not necessarily within a single guest.
Also, these talks should have some numbers (although the latter is about
XenServer), but again, it's mostly about total number, I think:
http://www.youtube.com/watch?v=uz52hxKbv5I
http://www.slideshare.net/xen_com_mgr/jonathandavies-xenservervmdensity20131024-1
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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next prev parent reply other threads:[~2013-12-01 8:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-01 6:03 pv kernel panic xen 4.4 unstable with large number of vcpus and default max_event_channel Elena Ufimtseva
2013-12-01 8:03 ` Dario Faggioli [this message]
2013-12-02 16:41 ` Elena Ufimtseva
2013-12-02 12:38 ` Wei Liu
2013-12-02 16:42 ` Elena Ufimtseva
2013-12-02 17:06 ` David Vrabel
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