[mythtv-users] 0.25 on mac-mini
gary.buhrmaster at gmail.com
Fri Jun 15 23:16:53 UTC 2012
On Fri, Jun 15, 2012 at 10:14 PM, Jean-Yves Avenard <jyavenard at gmail.com> wrote:
> On Core 2 Duo, 64 bits code runs slower than 32 bits one believe it or not...
This actually makes some amount of sense. The Core 2 Duo was
shown to be slower in 64-bit mode (than 32-bit mode) for some
class of workloads (and faster in others). Apparently, MythTV is
part of the former set. I also have this vague recollection that
on some particular Apple systems, if your system does not
have the appropriate 64-bit EFI bootrom, you ended up running
a 32-bit kernel, which means every 64-bit call may be going to
go through some sort of ugly "thunking" layer. But, never
having owned any of the fruit-themed vendor's products, this
last part is really all conjecture.
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