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authorPino Toscano <toscano.pino@tiscali.it>2013-03-15 16:37:56 +0100
committerPino Toscano <toscano.pino@tiscali.it>2013-03-15 16:37:56 +0100
commit10a5ed091374ee5d6421e6c55afd86b13c0f52a3 (patch)
tree95085219fb4ef1f53fe59cb9694aafcd4ce7cf00 /faq/ram_limit.mdwn
parent64ab4a5a92923e79cd6711b903c5e01c8598f8ba (diff)
Reorganize the Hurd FAQ in a single place
move all the hurd faq pages to the top-level faq directory; the faq.mdwn index now uses two simples map of all the subpages (one for the debian items, and the other for the non-debian items) TODO: now some of the items would need better titles
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+[[!meta copyright="Copyright © 2007, 2008, 2013 Free Software Foundation,
+Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+[[!meta title="830 MiB RAM Limit"]]
+
+Just like any 32bit OS without bad tricks, GNU Mach does not cope well with lots
+of memory. Latest versions of the Debian `gnumach` package will limit themselves
+to around 1.7 GiB of memory. If you want more, you can twiddle the VM_MAX_ADDRESS
+limit between kernelland and userland in i386/include/mach/i386/vm_param.h.
+
+If you have an older version, or still experience problems with `vmstat` (see
+above) reported much less memory than you have, the best is to limit the memory
+it can see via GRUB's `upppermem` feature. Add `uppermem 786432` to GRUB's Hurd
+entry in `menu.lst`.