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Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME

from [Ian Jackson]

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To:	Olaf Hering <olaf@xxxxxxxxx>
Subject:	Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME
From:	Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Date:	Wed, 3 Nov 2010 16:55:35 +0000
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Olaf Hering writes ("Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce 
MINIMUM_RESTART_TIME"):
> Too bad, this variable is only a bandaid because it doesnt know any
> context of the guest. And it cant know any context. When is a guest in a
> good or bad state? Should it panic, or crash? Its not easy to detect
> a bad condition.

Absolutely.  Also some guests may reboot rapidly the first time (or
two) eg due to fsck, and thereafter be fine.  It ought to be more
sophisticated.

> A better change would be to allow an override in the guest config file.

Yes :-).

Ian.

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[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-devel] [PATCH 12/16] xenpaging: print info when free request slots drop below 3, (continued) [Xen-devel] [PATCH 12/16] xenpaging: print info when free request slots drop below 3, Olaf Hering [Xen-devel] [PATCH 11/16] xenpaging: increase recently used pages from 4MB to 64MB, Olaf Hering [Xen-devel] [PATCH 15/16] xenpaging: print p2mt for already paged-in pages, Olaf Hering [Xen-devel] [PATCH 13/16] xenpaging: prevent page-out of first 16MB, Olaf Hering [Xen-devel] [PATCH 10/16] xenpaging: add signal handling, Olaf Hering [Xen-devel] [PATCH 16/16] xenpaging: (sparse) documenation, Olaf Hering [Xen-devel] [PATCH 09/16] xenpaging: start xenpaging via config option, Olaf Hering [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME, Olaf Hering Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME, Ian Jackson Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME, Olaf Hering Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME, Ian Jackson <= Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME, Xavier Beaudouin Re: [Xen-devel] [PATCH 08/16] xenpaging: reduce MINIMUM_RESTART_TIME, Ian Jackson [Xen-devel] [PATCH 14/16] xenpaging: add dynamic startup delay for xenpaging, Olaf Hering Re: [Xen-devel] [PATCH 00/16] xenpaging changes for xen-unstable, Olaf Hering [Xen-devel] [PATCH 17/16] xenpaging: notify policy only on resume, Olaf Hering

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