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| author | Thomas Schwinge <tschwinge@gnu.org> | 2007-09-05 02:28:57 +0200 |
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| committer | Thomas Schwinge <tschwinge@gnu.org> | 2007-09-05 02:28:57 +0200 |
| commit | 226c14be02e15a9eb0929eb82e05b89710708541 (patch) | |
| tree | 3c8153968bac3a7f10f36eb0089ccaeb4e47227b /hurd/neighborhurd.mdwn | |
| parent | 1a6d99feac88948eba6b00282eed091dbae31430 (diff) | |
Integrate some more pages.
Diffstat (limited to 'hurd/neighborhurd.mdwn')
| -rw-r--r-- | hurd/neighborhurd.mdwn | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/hurd/neighborhurd.mdwn b/hurd/neighborhurd.mdwn new file mode 100644 index 00000000..b4d25586 --- /dev/null +++ b/hurd/neighborhurd.mdwn @@ -0,0 +1,38 @@ +[[license text=""" +Copyright © 2007 Free Software Foundation, Inc. + +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.txt]]. + +By contributing to this page, you agree to assign copyright for your +contribution to the Free Software Foundation. The Free Software Foundation +promises to always use either a verbatim copying license or a free +documentation license when publishing your contribution. We grant you back all +your rights under copyright, including the rights to copy, modify, and +redistribute your contributions. +"""]] + +It is possible to run multiple instances of the Hurd +in parallel, on a single instance of Mach. Other than +performance crosstalk, they are essentially isolated. +Practically, as many devices do not allow multiple +non-cooperating users, e.g., hard drive and network +this is not currently possible. It can be overcome, +however, by virtualizing these problematic devices. + +When extra hardware is not available, it is possible to +use a sub-hurd. A sub-Hurd is like a neighbor Hurd, +however, makes use of some resources provided by another +Hurd. For instance, backing store and the console. +([[SubhurdHowto]]) + +Sub-hurds are extremely useful for debugging core +servers as it is possible to attach to them with gdb +from the parent ([[DebuggingViaSubhurds]]. This avoids +deadlock, e.g., when the instance of gdb stops the +server but requires its use. +(Note: it is possible to use [[NonInvasiveDebugging]], +but this is less flexible.) |