contiguous memory allocation problem

[Kip Macy]

FreeBSD's strategy for doing page coloring makes contiguous memory
allocation much past boot quite difficult. This will change when
generalized superpage support is brought in (I hope in the near
future).

   -Kip

On 6/30/06, Hans Petter Selasky <hselasky at c2i.net> wrote:
> Hi,
>
> I sometimes see that the USB driver is unable to allocate contiguous memory
> for itself. For example I noticed that FreeBSD was unable to allocate
> 350kbytes of contiguous memory after that I had run "konqueror", the KDE web
> browser and various other memory consuming applications for a while.
>
> I am thinking about pre-allocating some memory for USB, but isn't that the job
> of bus-dma, which the USB system uses for memory allocation?
>
> The machine in question is running FreeBSD 7-current from April.
>
> Any comments?
>
> Thanks,
> --HPS
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