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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-03-17 13:29:39 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-03-17 13:29:39 +0100
commitb43ea6ca9b24067ee5d4775383a09c46233119df (patch)
treeca8834a185270e2896cf213daf8184e3eeb3450b /faq/smp.mdwn
parentf4e44fd710c97c83c0626ce0334a2d4aedb729a2 (diff)
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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 use one logical processor (i.e. one core or one thread, depending on the socket type).
-
-Once this issue is solved, there are follow-up issues about
-[[open_issues/multiprocessing]] and [[open_issues/multithreading]].