[mythtv-users] Myth and 64 bit OK? Seeing too many issues

[Brian Wood]

On Jun 23, 2006, at 7:04 PM, Mark wrote:

> Is there a performance diff on 32 vs 64 bit?  Running on athlon 64  
> chip.
>
>
> ----- Original Message -----
> From: "David Rees" <drees76 at gmail.com>
> To: "Discussion about mythtv" <mythtv-users at mythtv.org>
> Sent: Friday, June 23, 2006 6:55 PM
> Subject: Re: [mythtv-users] Myth and 64 bit OK? Seeing too many issues
>
>
> On 6/23/06, Mark <list at onnow.net> wrote:
>> Should I just be going with the 32 bit OS?
>>

 From what I have read there is no great benefit to running Myth in  
64-bit mode.

Most of what Myth does is not floating-point intensive, or anything  
that would seem to benefit from the 64-bit architecture. The basic  
Myth just moves data around, except for the DB stuff, as most  
processing is taking place on capture cards or video cards, unless  
you're running frame-grabbers.

Some of the format conversions or maybe requant might benefit some,  
but I suspect the difference would not be great.

One problem with codec-related things that seem as though they  
*should* benefit from 64-bit is that they don't, because the 32-bit  
versions have been optimized so well, while similar work has not  
(yet?) taken place with the 64-bit code.