On Mon, Nov 26, 2007 at 08:59:12AM -0600, Guy Helmer wrote: > Gergely CZUCZY wrote: > >Hello, > > > >I'm trying to set up a qemu with 4G memory to the host system > >on a 7-BETA2, and I've hit some kind of limit in freebsd. > > > >When i give more then ~2000MB of memory to qemu, it returns > >an after trying to mmap() it, saying "Could not map physical memory". > > > >At the end of mmap(2) there's a note saying: > >" The len argument is limited to the maximum file size or available user- > > land address space. Files may not be able to be made more than 1TB > > large > > on 32 bit systems due to file systems restrictions and bugs, but address > > space is far more restrictive. Larger files may be possible on 64 bit > > systems." > > > >I guess I've found this limit. I've tried to check a few sysctls but I wasn't > >able to find the one effecting this limit. > > > >Could someone point me into the right direction in increasing the maximum > >mmap-able size? > > > > > If you are using the 32-bit i386 system, then you could be limited by a > couple of things, the kern.maxdsiz loader tunable or the datasize limit are > likely. On i386, I believe 1073741824 (1G) is the default maxdsiz. With 4GB > of RAM, I think you ought to be able to double kern.maxdsiz in > /boot/loader.conf. It's an amd64 with 14Gs of RAM in it. Sorry for accidentally omitting this.
Sincerely, Gergely Czuczy mailto: [EMAIL PROTECTED] -- Weenies test. Geniuses solve problems that arise.
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