Re: [Xen-devel] NMI: Enable watchdog by default

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

On Wed, Mar 7, 2012 at 5:11 PM, Keir Fraser <keir@xxxxxxx> wrote:
> On 07/03/2012 16:55, "Andrew Cooper" <andrew.cooper3@xxxxxxxxxx> wrote:
>
>> This patch is based on one which has been in XenServer for a very long.
>>
>> To keep the trend of documentation going, it also corrects the new
>> command line document.
>
> This does not only enable the watchdog by default, but also changes the
> timeout from 5 seconds to 5 *minutes*!
>
> Even if that is a good idea in some cases, we'd at least have to make the
> timeout configurable. Developers will not appreciate having to wait for 5
> minutes for their lockups to produce useful trace output.

Yes, the 5 minute timeout is what we ship for production boxes, so
that we can catch actual deadlocks while being *really really* sure we
don't take down a customer's system unless it's *really* dead.  I
think leaving the timeout as it is and making it configurable is
probably the best option.

 -George

>
>  -- Keir
>
>
>
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