Re: 64-bit problem with VM statistics
Re: 64-bit problem with VM statistics
- Subject: Re: 64-bit problem with VM statistics
- From: Andrew Gallatin <email@hidden>
- Date: Mon, 6 Jun 2005 14:52:31 -0400 (EDT)
William Kucharski writes:
> On Monday, June 06, 2005, at 06:50AM, Andrew Gallatin <email@hidden> wrote:
>
> >Now, with all my whining and complaining aside, the IOMMU code in
> >tiger has gotten *much* better. With tiger, pinning memory is
> >nearly as fast as it is on a DAC machine. However, the address space
> >is still limited. There's nothing they can do about that.
>
> You don't have to constantly pin/unpin memory if your OS is sophisticated enough
> to be able to manage the process better. While Tiger can't currently do this,
> Solaris for one can.
Solaris is actually unable to usefully pin any memory for HPC due to
quirks in their sysv based VM system. Solaris is probably the worst
OS out there for this.
> Though given today's Intel announcement, our discussion is largely moot at this
> point, as the entire Mac universe, and its performance characteristics, is about to
> change drastically.
Agreed.
Drew
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