Messages in this thread |  | | Date | Thu, 28 Feb 2002 17:12:30 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: question about running program from a RAM disk |
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On Thu, 28 Feb 2002, Hua Zhong wrote:
> Hi all: > > If I run a program from a RAM disk, will Linux be able to run it directly > from > the disk itself (as the image is already in memory), or do it the same way > as running from a disk? > > Thanks. > > Hua
It does it the same was as from a mechanical disk. If it uses dynamic linking, the default, the runtime libraries are memory-mapped and shared. In a perfect system, a very large program is not read into user's virtual address space all at once. Page-faults bring in, or discard, pages as required.
Cheers, Dick Johnson
Penguin : Linux version 2.4.1 on an i686 machine (797.90 BogoMips).
111,111,111 * 111,111,111 = 12,345,678,987,654,321
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