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authorThomas Schwinge <thomas@schwinge.name>2011-02-22 09:48:31 +0100
committerThomas Schwinge <thomas@schwinge.name>2011-02-22 09:48:31 +0100
commitfee874eec9933d1eaaf8fe19a0a51202604ba06b (patch)
treeb3570194b54d940d6cf9d858dfaee86f00951d6a /faq
parentb811e75bf5f2aff49db783b5ecb0aaa21a4f3a70 (diff)
hurd/faq/smp -> faq/smp.
This is a general GNU/Hurd system question.
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+[[!meta copyright="Copyright © 2009, 2011 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="Does GNU/Hurd support SMP/Multicore?"]]
+
+The Hurd servers themselves are multithreaded, so they should be able to take benefit of the parallelism brought by SMP/Multicore boxes. This has however never been tested yet because of the following.
+
+[[microkernel/Mach]] used to be running on SMP boxes like the [[!wikipedia
+Intel_iPSC/860]], so principally has the required infrastructure. It has
+however not yet been enhanced to support nowadays' SMP standards like ACPI,
+etc. Also, [[GNU Mach|microkernel/mach/gnumach]]'s Linux device driver glue
+code likely isn't SMP-safe. As this glue code layer is not used in the
+[[microkernel/mach/gnumach/ports/Xen]] port of GNU Mach, the plan is to try it
+in this enviroment first.
+
+[[!tag open_issue_gnumach open_issue_xen]]
+
+That is why for now GNU/Hurd will only uses one logical processor (i.e. one core or one thread, depending on the socket type).