RE: adding physical memory-pages to Linux' pool-of-pages

From: Jeff Garzik (jgarzik@mandrakesoft.mandrakesoft.com)
Date: Fri Jul 21 2000 - 08:23:06 EST


On Fri, 21 Jul 2000, Heusden, Folkert van wrote:
> > What I want to do is; I have an PCI-card with on-board RAM. I want
> > somehow to tell the kernel that it can use that RAM as if it was any
> > other RAM.
> JG> Have you benchmarked accessing system memory versus PCI shared mem?
> JG> I'm thinking not...
>
> I'm thinking it doesn't matter that it's slower. I'm thinking it's less
> slower than swapping to harddisk. Especially for the system I want to
> implement this. That one has harddisks doing 1MB/sec. I think access trough
> PCI can do better then that.

It *does* matter. However using it as swap is perfectly feasible; in
fact at least one patch has been posted to lkml which does such.
(sorry, I don't have any reference, this old man's brain fails me at the
moment)

        Jeff

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sun Jul 23 2000 - 21:00:15 EST