[mythtv] clone_vm

Kevin Elliott kevin at phunc.com
Wed Dec 8 04:58:23 UTC 2004


----- Original Message ----- 
From: "Andrew Mahone" <andrew.mahone at gmail.com>
To: "Development of mythtv" <mythtv-dev at mythtv.org>
Sent: Tuesday, December 07, 2004 8:44 PM
Subject: Re: [mythtv] clone_vm


> As others have mentioned, MythTV uses threads, and openmosix can't
> migrate threaded applications.  A quick google turns up openssi, which
> is substantially different from openmosix (it's still clustering a set
> of computers, but it presents them to applications as a single
> multiprocessor computer), and is capable of migrating threaded
> applications.
>
> I'm still not sure this is a hot idea, though - if capture is being
> done on one system (the one with the card), and compression on another
> (because mythbackend got migrated off of the system with the card),
> isn't openssi going to be passing the uncompressed frames over your
> network?

Assuming you're capturing 1GB of raw data a minute, it would be fine on a
gigabit network though wouldn't it? (roughly 17MB/sec)

>
>
> On Mon, 06 Dec 2004 01:20:10 +0000, travis eddy <boscotwo at hotmail.com> 
> wrote:
>> hello, i have done some more research on clone_vm.
>> do you guys use it to share memory? or for programs to communaite? i 
>> would
>> really like to disable it so that processes could move around my cluster. 
>> if
>> it is for communation then i know its not gonna happen, but if you use it 
>> to
>> same memory then i can deal with memory sucking processes.
>>
>> -thanks
> -- 
> Andrew Mahone
> andrew DOT mahone AT gmail DOT com
>


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