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| author | Thomas Schwinge <thomas@codesourcery.com> | 2013-04-18 10:17:57 +0200 |
|---|---|---|
| committer | Thomas Schwinge <thomas@codesourcery.com> | 2013-04-18 10:17:57 +0200 |
| commit | 3eff66251a6609fc2a0c1f4957c053e2cde0db64 (patch) | |
| tree | 3c4f6227dc9377715113a9038289edfb35ddb614 /faq/ram_limit.mdwn | |
| parent | 763d7b1e8eb23335636c45b5088326ba1b308de3 (diff) | |
| parent | 7e73314d273969ea29cb35bf1b75b6a84d599beb (diff) | |
Merge remote-tracking branch 'dirichlet.SCHWINGE/master'
Diffstat (limited to 'faq/ram_limit.mdwn')
| -rw-r--r-- | faq/ram_limit.mdwn | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/faq/ram_limit.mdwn b/faq/ram_limit.mdwn new file mode 100644 index 00000000..5017925c --- /dev/null +++ b/faq/ram_limit.mdwn @@ -0,0 +1,24 @@ +[[!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]]."]]"""]] + +[[!tag faq/support]] + +[[!meta title="830 MiB RAM Limit"]] + +Just like any 32-bit OS without bad tricks, GNU Mach can 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`. |