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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]].
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