Re: fork: out of memory

[david parsons]

In article <[e-mail]>,
Alan Cox <[e-mail]> wrote:
>> 256 kB ought to be enough, to be used only for DMA allocations 
>> larger than the page size. Large systems (over 64 MB) could have 
>> a full megabyte reserved for all DMA allocations.
>
>This is silly. You can already guarantee your DMA allocations and waste
>less memory than that by compiling drivers in rather than as modules

   It doesn't seem to work that way with the floppy driver (which cheerfully
   fails to open floppies if I'm doing any sort of serious disk-eating work
   on my server with 200mb of core) or the st driver (that Just Won't allocate
   buffers larger than 128k, thus making me keep 1.2.13 around to read IRIX
   tapes.)

   Specialised memory regions would be a spiffy thing to have, particularly
   if you can have the kernel push unwelcome occupants of that region out
   by a method less drastic than `dd if=/dev/zero of=/dev/null bs=<coresize-2k>
   count=2'

                 ____
   david parsons \bi/ fast memory vs. slow memory, anyone?
                  \/