Messages in this thread | | | From | "Hua Zhong" <> | Subject | Re: question about running program from a RAM disk | Date | Thu, 28 Feb 2002 14:24:07 -0800 |
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In the final system we are going to turn off swap. I had dreamed that Linux could directly use the page frame on the RAM disk instead of doing another copy :-)
Thanks for the reply
Hua
----- Original Message ----- From: "Richard B. Johnson" <root@chaos.analogic.com> To: "Hua Zhong" <hzhong@cisco.com> Cc: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org> Sent: Thursday, February 28, 2002 2:12 PM Subject: Re: question about running program from a RAM disk
> 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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