Jeff, This is the environment I used to make the tests
- Host kernel: 2.6.12.3 with skas3 v8.2 patch - Guest kernel: 2.6.12.3 with bb patch (you can download it from http://www.dit.upm.es/vnuml/#download) - Rootfs: Debian-3.0r0.ext2 from http://user-mode-linux.sourceforge.net/dl-sf.html (I just edited the /etc/inittab file to change tty names to vc/0, vc/1, etc and avoid the "respawning too fast errors") Virtual machines are started with the following line: > linux-2.6.12.3-1m mem=XXXM ubd0=Debian-3.0r0.ext2 con0=xterm I have just redone the test and again the limit is around 230M. With bigger memory sizes the vm stops on "Mounted devfs on /dev" message (and the CPU goes to 100%). I have tried the "echo 131072 > /proc/sys/vm/max_map_count" command, but now I don't see any difference after executing it. When I tested last week, I saw an improvement, but maybe was due to another effect... I have also tried with devfs disabled, but the same result. Anyway, it is not a big problem for me as I can reach at least 200M which is more or less what I need. Thanks and best regards, David > -----Mensaje original----- > De: Jeff Dike [mailto:[EMAIL PROTECTED] > Enviado el: jueves, 13 de octubre de 2005 18:23 > Para: David Fern?ndez > CC: 'Marco Gruss'; [email protected] > Asunto: Re: [uml-user] Problems with big memory sizes > > On Tue, Oct 11, 2005 at 02:01:57AM +0200, David Fern?ndez wrote: > > Yes, that was certainly a problem. After issuing the command: > > > > echo 131072 > /proc/sys/vm/max_map_count > > > > to increase the maximum memory owned by a process to 512 > M, the vm started > > correctly with 256M. > > > > However, the problem reproduces again around 310 M with > the same behaviour. > > Can you send (or otherwise make available) the binary that > you're using? > > There's no way that a UML process should have created > > 65536 maps that early > in boot. > > Jeff > ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl _______________________________________________ User-mode-linux-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
