boscotwo at hotmail.com
Tue Dec 7 00:35:21 UTC 2004
yes i know you can have a remote backend... for some reason i get crazy "i
ran out of audio buffers :-(" errors when i run the front or backend on my
>From: Colin Cross <colin at colincross.com>
>To: Development of mythtv <mythtv-dev at mythtv.org>, boscotwo at hotmail.com
>Subject: Re: [mythtv] clone_vm
>Date: Mon, 06 Dec 2004 12:44:14 -0500
>travis eddy wrote:
>>all of the mythtv threads. every one is "locked" to the machine they are
>>run on. ( the openmosix won't move them if they have clone_vm enabled)
>As Issac has pointed out, you are missing the difference between threads
>and processes. A thread is similar to a process, but by definition threads
>share their memory space with all other threads of the same process. I
>don't know anything about openmosix, but as far as I can tell, it can only
>move processes, and even then, only processes that do not share memory
>(i.e. without clone_vm).
>In MythTV, mythfrontend is a process. mythbackend is a process. All the
>different things that happen inside each of them are threads. You cannot
>separate threads across multiple machines, because they share memory space.
> There is no way to remove the shared memory from the threads, the entire
>design of thread locking and synchronization relies on shared memory.
>Since your hardware requirements mean both the frontend and backend
>_processes_ have to run on the same computer, you are out of luck.
>Openmosix could move the frontend process or the backend process to another
>computer if your hardware didn't require otherwise, but Myth already has
>this functionality with remote backends.
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