diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2010-03-13 12:26:41 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2010-03-13 12:26:41 +0100 |
| commit | 4d15634e3574c54db86e79ae6e5734de49bfc57b (patch) | |
| tree | 9b0aff98f8b9427ab94bcd1a3163a98d9071bd38 /hurd/running/debian/faq | |
| parent | 7f786419b9c8026a8ab9e36b04fd4cadaf1fb527 (diff) | |
more details about the memory limitation
Diffstat (limited to 'hurd/running/debian/faq')
| -rw-r--r-- | hurd/running/debian/faq/512_mib_ram_limit.mdwn | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/hurd/running/debian/faq/512_mib_ram_limit.mdwn b/hurd/running/debian/faq/512_mib_ram_limit.mdwn index 90c16a69..f89a5c01 100644 --- a/hurd/running/debian/faq/512_mib_ram_limit.mdwn +++ b/hurd/running/debian/faq/512_mib_ram_limit.mdwn @@ -10,9 +10,12 @@ is included in the section entitled [[!meta title="512 MiB RAM Limit"]] -GNU Mach does not cope well with lots of memory. Newer versions of the Debian -`gnumach` package will limit themselves to around 1 GiB of memory. 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`. +Just like any 32bit OS without bad tricks, GNU Mach does not cope well with lots +of memory. Newer versions of the Debian `gnumach` package will limit themselves +to around 1 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`. |